Guy mentioned running it for "What's there". Not sure if he meant the $113,900, before his raise, or if he meant for David to call his $125K raise and play for $363,900; but none of you would at least run it twice for either of those amounts? 4 chances to hit a spade and split Sammy's $$.
If David was paying attention at all he would know Guy was pretty tight the whole night, so for Guy to raise $125K on top of $43K, he had to have put him on 2 pair or a set or something strong. So, to put him on a strong hand and then give him the pot... why go AI in the first place? Not saying going AI was the right move, but he made it, so the question is the move after that point.
I would think I would at least run it twice for the middle pot... if I had their $$ . David was 35% to win, which means he should hit it at least 1 out of the 4 cards... right?
On a side note, did Guy really have David covered? If I remember right it seems like he stacked off quiet a bit just before this hand. (Maybe he bought in for $1M?)