freechus, were only a slight fav against a big pair so getting a big pair to fold is a + ev move with all the money already in the pot. If we just call, and the turn bricks with him betting big again we can almost gurantee were crushed and we wont have enough fold equity on the turn so well end up getting our money in a 65/ 35 underdog which is rather bad. Whilst if we do whack the turn he shuts down and we dont get any more monies...Thus shoving the flop is the best move with him calling or folding both being good for us.