$1.10 6-max JJ OP gets raised on flop

No Limit Hold'em Tournament T3,600/T7,200/T900
Buy-in: $0.98+$0.12 USD Hold'em No Limit
PokerStars
6 players
Formatted by pokercopilot.com: Poker HUD for Mac and Windows

Player doesn't fold to 3bets or Cbets. Jam flop after he raises? He seems to like to CR...

There are 12 players left in the tournament.

Stacks:
UTG - UTG (T421,532) 29/20/6 150 hands FT3b=0 FTCB=14% C/R 30%
MP - MP (T129,796)
CO - CO (T301,850)
BTN - Hero (T614,377)
SB - SB (T378,247)
BB - BB (T112,580)

Preflop: (T16,200, 6 players) Hero is BTN with J♥ J♠
UTG raises to T14,400, 2 folds, Hero raises to T39,700, 2 folds, UTG calls T25,300

Flop: 3♠ 9♣ 5♦ (T95,600, 2 players)
UTG checks, Hero bets T37,800, UTG raises to T75,600, Hero calls T37,800

Turn: A♥ (T246,800, 2 players)
UTG checks, Hero checks

River: 7♦ (T246,800, 2 players)
UTG bets T305,332 (all-in), Hero???