The reason Burke was removed from St. Louis was his refusal to abode by the canons prohibiting crossing into the jurisdictions of other hierarchs.
Are you certain about this? I have not read any such statement from the Vatican saying this was the reason why he was reassigned. You may be right, but I don't know if one can say that as certainly as you have without engaging in some form of gossip. Surely that court is not simply being stocked with exiles for bad behaviour?
I think you are also overstating the rest of your case a bit. I am not an expert, so I am not making any claim to definite knowledge, but I would be inclined to think that if we looked through the history of the Church we could find numerous examples of bishops criticising other hierarchs for their public actions, statements and policies, especially for particularly scandalous ones. Were there no Orthodox bishops who rebuked those who allowed the filioque to be used in their dioceses? Surely not. Since Kennedy's funeral was a nationally (globally?) watched and publicized event I cannot see how a bishop can actually be "intruding" into Boston's affairs simply by speaking about it, or even for criticising Boston's bishop for allowing it.
“I don’t know if one can say that as certainly as you have without engaging in some form of gossip.”
Gossip? From the Vatican and among hierarchs, yours and ours? Heaven forefend!