Bottom set on flop, one low board

[Damocles]

Heron called it. Given the way the table was playing, I thought the CO likely had A2Wx and the BB a straight draw and put in a pot-sized raise. I was almost right; CO claimed afterwards he had AA39ds, BB had KKQT. Other caller folded, CO folded, BB called. With the 3 dead aces I was a 71-29 favorite. BB spiked the last A and scooped. The real question is, did I essentially commit myself to ruin here and just happen to have a lucky/correct enough read equity-wise on the major decision? On the flop, the PSR seems like the only option.

Sorry for the navel-gazing. CO started an argument with me after the hand and I've been thinking about it for a little while.