Tough River Decision

[Nightfall123]

Villain is PlzDontDoIt at like 30/23/2.4 over ~300 hands

Party Poker - No Limit Hold'em Cash Game - $2/$4 Blinds - 6 Players - (LegoPoker Hand History Converter)

SB: $402.00
BB: $380.00
Hero (UTG): $818.40
MP: $83.32
CO: $400.00
BTN: $394.00

Preflop: Hero is dealt A[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/heart.gif[/img] (6 Players)
<font color="red">Hero raises to $14.00</font>, MP folds, CO calls $14.00, BTN calls $14.00, 2 folds

Flop: ($48) 5[img]/images/graemlins/spade.gif[/img] 6[img]/images/graemlins/diamond.gif[/img] 9[img]/images/graemlins/diamond.gif[/img] (3 Players)
<font color="red">Hero bets $35.00</font>, CO calls $35.00, BTN folds

Turn: ($118) J[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">Hero bets $75.00</font>, CO calls $75.00

River: ($268) T[img]/images/graemlins/spade.gif[/img] (2 Players)
Hero checks, <font color="red">CO bets all-in for $276.00</font>,
Hero:???

Do i have to call now that i checked to him and the FD missed??? I doubt he's shoving any 1 pair hand here, so to me its either missed FD or some random 2 pr hand. Also should i have just gone all in on the river to avoid spots like this?