Firstly, I just want to say that I'm not qualified to debate on this subject, considering my newness to Orthodoxy, however I'd like to offer my thoughts if I may.
But during the course of my journey towards it, one of the first people I read about (and have hence come to admire) -is- St. John Chrysostom: I absolutely -love- him! If he indeed do what he did, then while it maybe up for debate, truly the heart of the matter is that isn't between us, but St. John himself and our beloved Lord.
I admit it did hit a nerve for me in reading the original post, mostly because he is someone I consider one of my personal saints and love reading his work, as it provides me comfort and advice.
Think of it this way: how many leaders or important men(women) have perhaps been deceptive themselves but are considered wonderful, good, and a great credit (benefit) to a good deal many people because of their overall intentions and actions and their results? For example, look at (St.) Constantine the Great: here was a man who was quite ruthless among other things, BUT he -was- the one responsible (along with his mother St. Helena I understand) for legalizing Christianity in the first place--I mean, if you really think about it, it makes me wonder where would Christianity be today if he hadn't done it, and hadn't had that sign in which he would conquer? Did that excuse his actions from the past and such and his behavior afterwards? Of course not, but the fact of the matter remains that if it wasn't for him and his mother, who know where we'd be today. Methinks if Christianity wasn't legalized, then it would have remained a persecuted faith and perhaps nothing that had happened would have happened afterwards.
I do not know (or think) but it seems logical to me given this that if it wasn't legalized, then the RC (and hence Protestant faiths of all stripes) would not have existed (well maybe not to the extent it does today). Please understand (and I want this to be absolutely clear), that I am in no way shape or form trying to offend anyone, just speak my thoughts, so if I inadvertantly do, I apologize.
So, based on this example, was Constantine a terrible man? Maybe and probably but what is loved and venerated about him is the fact that because of his legalizing Christianity, it gave it a chance to grow and spread without condemnation. In other words, his good outweighed his bad.
I think that is the same with St.John. -If- he did indeed deceive, then I'd think what he did do (or tried to, as it has been said already that we are all sinners no matter who we are) for our faith would far outweigh it: I mean, any man who can be instantly recalled by an Empire out of fear of the people and peasantry rioting because he was so beloved by them for standing up against politics and extravangence and the like is definately someone to be admired for having such a powerful effect onto those he ministered to. I'd also venture to say that would speak powerful volumes of his overall character and intentions.
I love him dearly and admire his writings--it is one of those thing that have guided me along my own journey and that I hope will continue to (by the grace of God).
One book I think you might enjoy if you want to learn a little more about him and where he stood on certain things is called:"Daily Readings From the writings of St. John Chrysostom" by Anthony M. Coniaris.
It has a lot of wonderful little snippets of his sermons on a wide variety of subjects, including his Easter homily. VERY good book and reading and I highly recommend it.
Hope what I've said made sense--oftentimes what I am thinking and wish to express never comes out right when I speak (write) it so *laughing* I hope it did. Just my thoughts and opinions only on someone I consider a great man! Thank you for reading and listening