If the Patriarch were to commemorate Metropolitan Hilarion in the Diptychs of Constantinople it would be a breach of canonical order.
Of course it would. Because "ROCOR" has an uncanonical status.
I really do not know who is supplying you with this misinformation but be it known that since May 2007 the Russian Orthodox Church Abroad has been an integral part of the Patriarchate of Moscow. If ROCA is uncanonical I guess that Moscow is uncanonical.
Act of Canonical Communion Signed in Moscow
http://www.pravmir.com/article_228.html
LOL! 
What a riot!
Lets look at facts Irish Hermit:
Certainly, there is a problem in geographical areas which do not have a long standing history of the Orthodox Church in that different jurisdictions have Bishops in the same area, but if this in itself is uncanonical, then it is more uncanonical that the same jurisdiction (Moscow Patriarchate) should have three different Bishops and three different local Churches in the same geographical area.
First we have His Grace Iov, Bishop of Kashira, Administrator of the Patriarchal Parishes in Canada (and temporarily in the USA)
http://www.russianchurchusa.org/index.php3?ln=en
Next we have His Beatitude Metropolitan Jonah of the Orthodox Church in America
http://www.oca.org/
Then we have His Eminence, Metropolitan Hilarion of the Russian Orthodox Church Outside Russia
http://www.russianorthodoxchurch.ws/synod/indexeng.htm
I think we all have bigger things to worry about than a political editorial in the US.
His Beatitude Metropolitan Jonah of the Orthodox Church in American is not in the jurisdiction of Moscow. I know that those in the Phanar, who haven't noticed that the Ottoman Empire has fallen and so the EP is no longer the Sultan's consecrated Milet Bashi, doesn't see it that way, but then didn''t someone bring up the idea here (or the sister thread) that those of us not in the EP's jurisdiction shouldn't be paying attention to His Divein All Holiness?
His Grace, Iob
of Kashira. I don't know how well you know geography, but Kashira is in Russia. Not far from Moscow in fact, with a population of 40,000. I mention that given the Phanar perchance for installing bishops of uninhabited sees to rule over those thousands of miles away from said abandoned sees. HG is not here because of that: Kashira has churches, e.g.:
http://www.flickr.com/photos/msirotin/sets/72157616640997100/The terms of the OCA's Tomos of Autocephaly require that, for those by the terms of the Tomos of Autocephaly "are excluded from autocephaly on the territory of North America....shall be governed by the Most Holy Patriarch of Moscow and All Russia through one of his vicar bishops; not having a title of the local American Church, especially appointed for this, and until such time as these parishes express their official desire to join the Autocephalous Church in America in the manner described" by the terms of the Tomos.
HE Met.Hilarion's status is rather recent, and explicitely grandfathered by the terms of the Tomos (ROCOR was not part of the Metropolia, has not joined it, and the Tomos allows the PoM to receive uncanonical groups, which by terms of the Tomos at its signing, ROCOR was). "Being guided by the effort towards reestablishing blessed peace, Divinely-decreed love, and brotherly unity in the common work in the harvest-fields of God within the Fullness of the Russian Orthodox Church and her faithful in the Fatherland and abroad, taking into consideration the ecclesiastical life of the Russian diaspora outside the canonical borders of the Moscow Patriarchate, as dictated by history..[and]...Taking into account that the Russian Orthodox Church Outside of Russia performs its service on the territories of many nations...conducting its salvific service in the dioceses, parishes, monasteries, brotherhoods, and other ecclesiastical bodies that were formed through history [as a] self-governing part of the Local Russian Orthodox Church....independent in pastoral, educational, administrative, management, property, and civil matters, existing at the same time in canonical unity with the Fullness of the Russian Orthodox Church." Given the recent (and immediate: the OCA and ROCOR publically concelebrated as soon as the Act of Canonical Communion was signed) meetings and good will between Met. Jonah and Met. Hilarion (no speech from Met. Jonah upset Met. Hilarion, as obviouly his speaches have riled feathers in the Phanar), these issues of appearance will be dealt with, although there is no argument on substance, at least between the PoM, Met. Jonah, and Met. Hilarion. Btw, the patriarchal parishes are required to commemorate Met. Jonah in additon to Pat. Kyril. ROCOR parishes as of yet are not required to commemorate Pat. Kyril in addition to Met. Hilarion.
Your EP, however, has not only his Greek bishops, but others on an ethnic basis over the same territory in North America. But then, that was the basis on which the EP codified the nonsense we are dealing with in its 1908 "Patriarchal and Synodal Tomos about the orthodox Greek Churches [sic] outside of the specified boundaries of the individual autocephalous churches’ regions dispersed both in Europe and America and the remaining countries.....I.) For the spiritual oversight and direction of these Churches an Archpriest [i.e. a bishop] appointed by the Sacred Synod of the Church of Greece, having the duty of ministering inspection of each one of these churches from time to time. II.) The Archpriest appointed to this spiritual oversight and inspection of the said churches by the Sacred Synod of the Church of Greece, who can both be and receive from among the archpriests by us of the Most Holy Patriarchal Ecumenical Throne, each one given leave from it must appear in Constantinople both to receive the blessing assent of the Ecumenical Patriarch and further for the Holy Myron for these churches...."
