I know his preflop play doesn't indicate AA, but his flop play sure does.

Poker Stars
Pot Limit Omaha Ring game
Blinds: $0.25/$0.50
6 players
Converter

Stack sizes:
UTG: $52.15
UTG+1: $57.50
Hero: $53.70
Button: $13.55
SB: $63.75
BB: $127.05

Pre-flop: (6 players) Hero is CO with K 5 T K
UTG calls, UTG+1 folds, Hero raises to $2.25, 3 folds, UTG calls.

Flop: 4 K A ($5.25, 2 players)
UTG bets $5, Hero raises to $20, UTG raises all-in $49.9, Hero ????

seems like he has AAJ5 or some crappy hand that doesn't justify raising pre flop.

Fold second set for $30 into $80? No.

Doesn't help that we have the Kd, but you see AKxx, QJTx, and other hands with diamond draws often enough to call here.

If you're Jerry Yang, yes.

How about AK44? That is about what is taking for me to grab a stack these days.