Dear brother Marc,
Thank you deeply for your research. I could have done it myself. I came here to ask the question simply because it seemed to me like the quickest way to find out (given my limited time).
As I stated earlier, there is indeed a portion of the Indian Church still in communion with the OO, so the website you mention doesn't come as a surprise.
I do distinctly remember (those many months ago) that at one website (it was a Syriac Orthodox website), there was a ban on discussion of the topic. I'm not sure if that was an internal ban in the website, or if there was some ecclesiastical ban going on. It would seem sensible to have an ecclesiastical ban, to prevent scandal.
In any case, I will do my own research (would you like me to post the results here, if you are interested?). Once again, thank you deeply for your research. I did not intend anyone to go through any trouble on my account. I simply thought the info would be more readily accesible here.
From http://malankaraorthodoxchurch.in/The Church is in communion with the other Oriental Orthodox Churches namely, Antiochene, Alexandrian, Armenian, Eritrean and Ethiopian Orthodox Churches. The Church is in good ecumenical relationship with the Eastern Orthodox, Roman Catholic and Protestant Churches.
The SOC says nothing: http://www.syrianorthodoxchurch.net/Location/Global/SOC-index-Global-en.htm/
The IOC has the most developed site http://www.orthodoxsyrianchurch.com/index.php/home but all the "read more" links are in their language.
These three appear to be separate churches but I can't find any pertinent news.