Not sure this is a bug.
This is what happened:
I played a priest Vs. a battlecry quest shaman.
at some point (T10 maybe?) he played Zeph. at that point I could see him hovering over the minions on the board, and the big red arrow that shows his moves, but nothing moved on the board.
There was no rope
The game did not show any sign of me being disconnected.
I waited and waited and then all at once he played 4-5 cards (Hex and Alex and some other big minions, AND with out me even having a chance to respond I got roped out and he hit my face and won.
A bug? A cheat?