Is this game + EV?

[M.Goodcat]

I already posted this hand on another site and got an answer that my opponent actually made a +EV move because he had fold equity. I have a solid image, winning all my showdowns and not chip leader because of a suck out earlier.
The vilain is a loose player (no stats on bodog) and I already taken some pots from him.
SNG 3.30$, 3 players remaining. 75/150
BB 7000 and sth
SB 3000 and sth
BTN (hero) 4000 and sth

hero: ??
SB: A [img]/images/graemlins/spade.gif[/img] 8 [img]/images/graemlins/spade.gif[/img]

hero: raise 450t
SB: call
BB: Fold

Flop:

9 [img]/images/graemlins/spade.gif[/img] T [img]/images/graemlins/diamond.gif[/img] 4 [img]/images/graemlins/club.gif[/img]

hero bets: 750t
SB raise all in.

In view of the level of the tournament, my table image, my FE and other variants (tell me which), is this shove +EV?
My opinion is that it is a revenge shove on me without any value. To make it short I think this is a total donk move but...