Yes it really does seem as though villan has Ah and now he has TP + nutflush draw. I would feel really weird about calling this massive overbet, but it all depends on player reads. Im not exactly sure how often you have to be right here in order to make this call correct but if you haven't noticed there the straight card hit and he could very well be holding Q10 and is trying to ptotect his hand from a 4th heart falling that would horribly de-value his hand. I think im laying this down.