When to push with Top Pair post flop?

Reads: Villian is pissed at me. I've been successfully stealing loads of blinds, plus lots of post flop aggression, and nailed him on one hand with a nut flush when he had 6 high flush on the turn (he pushed all in after I re-raised him). He re-bought and I continued to bully the table. This hand happened maybe 10-12 hands after the flush all-in battle.


Poker Stars
No Limit Holdem Ring game
Blinds: $0.10/$0.25
4 players
Converter

Pre-flop: (4 players) HERO is SB with 9 T
2 folds, HERO raises to $1, BB raises to $3, HERO calls.

Flop: 4 9 2 ($6, 2 players)
HERO bets $3, BB raises to $10, HERO raises all-in $40.25, BB calls all-in $9.15.
Uncalled bets: $21.1 returned to HERO.

Turn: J ($44.3, 0 player + 2 all-in - Main pot: $44.3)


River: 3 ($44.3, 0 player + 2 all-in - Main pot: $44.3)


Results:
Final pot: $44.3

C'mon, anybody?

My initial reaction was 'never in that spot'.

However, it's certainly possible that you are ahead of his missed AK and he calls anyway after his (pretty standard) flop reraise of you donking into him (and due to his frustration with you).

Well, I guess everyone here just thought I lost the pot and that's why thy didn't reply... I won the pot, he had 88 and my pair of nines took it down.

I sensed he was on tilt. Normally I would never make this play, but I trusted my reads.