88 in trouble

[AZK]

5/10, I have 1000 behind, 88 in MP, I limp behind someone, button limps, SB completes, BB checks.

Flop come QQ6 (Q spades)

Checked around.

Turn 8 spade
I bet 40, button calls, SB calls

River 9 spade

Now I know that someone has been sitting in the grass just waiting, or finally picked up that gutshot/flush draw on the river so I overbet the pot by about 50 making it look like I just have a Q and I'm trying to take it down.

Button moves in for just over 800, SB calls his all in for 630. Action to you (what the [censored])?