Is this iso cram ok here?

PokerStars - $0+$0|60/120 Ante 15 NL - Holdem - 9 players
Hand converted by PokerTracker 4

MP+1: 3.17 BB (VPIP: 0.00, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 61)
MP+2: 3.63 BB (VPIP: 0.00, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 71)
CO: 84.71 BB (VPIP: 51.43, PFR: 25.71, 3Bet Preflop: 12.50, Hands: 35)
Hero (BTN): 30.83 BB
SB: 53.55 BB (VPIP: 57.14, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 14)
BB: 54.08 BB (VPIP: 15.63, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 32)
UTG: 6.16 BB (VPIP: 50.00, PFR: 0.00, 3Bet Preflop: -, Hands: 2)
UTG+1: 42.88 BB (VPIP: 12.77, PFR: 2.13, 3Bet Preflop: 0.00, Hands: 47)
MP: 85.77 BB (VPIP: 31.58, PFR: 19.74, 3Bet Preflop: 3.85, Hands: 77)

9 players post ante of 0.13 BB, SB posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 2.63 BB) Hero has T A

UTG raises to 6.03 BB and is all-in, fold, fold, fold, fold, fold, Hero raises to 30.71 BB and is all-in, fold, BB calls 29.71 BB

Flop: (69.08 BB, 3 players) 4 3 8

Turn: (69.08 BB, 3 players) A

River: (69.08 BB, 3 players) Q

tough spot, I don't think jamming is that bad, but if BB has monster like he did then you're way behind. calling isn't bad either because BB doesn't have great pot odds to go, but if BB jams then you're forced to fold.

out of the two options jamming is probably better

i like flatting and folding to a BB shove here... he actually will never call your shove with worse hand

Shoving 30bb in that spot is crazy but with the 6bb shove you can't effectively 3b. I think I prefer just flatting there. The risk of BB calling behind is reduced by the size of UTG's shove.