[latvaniemi]

Shorter stack means higher possibility that he puts all his money in on the turn. A shove on the flop might fold out spewy hands that he draws dead on but he might be inclined to call. By betting small you get a larger range of callers that you beat but shoving wont drive out hands that might beat you (in this case flush and rarely a straight) But shoving is okay if youre sure that he'll call. The smallbet was a line of tought trying to make him go allin with a wider range of hands.