I'm in exactly the same situation as you, and I'm likewise disappointed.
Although I would say the accusations here (that burnin is mining with customer equipment - with no evidence cited, almost certainly because the poster is making it up) is pretty much par for the course here. And after putting up with these forums for months, I can quite understand why he just can't take it any more.
Would still really appreciate a bit more communication.... both on the Avalon and Bitfury boards. Burnin, I've stood buy you, I've defended you. I still think you mean well, but it's hard to continue to believe in you when things don't go according to plan and you fail to give any update....
roy