Nah I still have a 0 counter for Tronne so it couldn't have been me. Was this on PSN or XBL? I also really can't get this combo off for nothing online and only about 50% of the whole combo offline right now (well I've been on a drought for missing DP xx Maximum spider at the very end for some reason). I mean I still take out members, but I need to have it at least 99% by the time I go to a major (yea i'm picking this game up with Soul Calibur for major tournies).
The only person I seeing maybe getting out of this combo is Sentenal's unblockable Aerial Hyper, but he has to get it off in like 2 frames (if performed right that's about all the time you recieve). I haven't tested it against a human sentinel so it goes without saying. I just know any form of attack, block, and tech (front or backwards) will not be able to escape the unblockable reset.