I was just going to suggest the same thing: that it is more probable that the buds aborted. If they had burned from the sun, or from the ant poison, I would expect to see parts of individual buds more affected and some buds more affected than others. As Moby says, it's likely that the plant "knew" it just couldn't support any more buds to bloom.
BTW regarding Terro: if you have found in the last few years or so that it just doesn't seem to work like it used to... you're right. The company had to remove the arsenic compound from the mix (an EPA thing) that made it so good.
