I appreciate your opinion, however, there is no way for any player to know for sure that someone would push from a flash at short. Many players will flash and poke to spot ramp then crossover etc.
However, with that said - having watched the whole demo again, excluding the possibility of the above mentioned, there was little to support any non-legitimate play.
I am willing to concede that I may have come to a decision far too hastily in this case and would like to apologise for doing so.
If those reviewing the demo believe this to be the case, I would be happy if the decision was overruled.