[Jake (The Snake)]

Yeah Rob basically already said everything I wanted to add: the pot is too big and our opponents have too many outs.

In a smaller pot against an aggressive opponent who has less outs if behind, checking behind becomes a much more viable strategy. It is also better to do when you are unsure what to do to a checkraise, and you want to make sure you get to showdown against somebody who could be bluff raising.

Josh. has lots of good posts in the HUSH archive on when checking behind on the turn is good. King Yao also explains it pretty good in his book.