The bug is quite common, and quite Deadly : there does not seem to be a way to escape. Besides TG and HoD, two of my teammates also faced it in Trial of the Planes
Gilesclone said: Just got this in TG. I hope it goes away at the end of the event at least. Because nothing else works
Rhasget said: This is still occurring for me too. Just today I lost my two final black nodes on Emrakul when it got stuck.My tickets were not even replied to after I gave all relevant info, just removed.