Heroes World TOP-8: Reports and summaries.

Phil, tournament rules have point 9 which states:
9. In case of a connection interruption or game crash, the last autosave is loaded, and players are required to exactly repeat all their moves up to the point of the interruption or crash.
So you could have confidently responded in kind)).
If you hadn't fulfilled the second part of this point, the opponent could have demanded a victory.