[curtains]

To summarize - the key to this hand is that you cannot bet and then fold to a raise. Also you don't want action. Thus you move allin to discourage the action. If the pot had 100 chips in it, instead of 250, the play would change.

Please note that Im practically a coinflip here against top two pair. I simply cannot fold this hand NO MATTER WHAT after the flop. This is not at all a close or difficult decision.