PokerStars No-Limit Hold'em, $1.00 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Button ($85.35)
SB ($48.80)
BB ($274.45)
UTG ($100.30)
Hero ($129.40)
CO ($86.05)

Preflop: Hero is MP with A, A.
1 fold, Hero raises to $3.5, 3 folds, BB calls $2.50.

Flop: ($7.50) 8, T, 3 (2 players)
BB bets $6, Hero raises to $20, BB raises to $270.95, Hero ???

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Villian is 26/18/2 over 220 hands. I suspect there is a possibility that he has been re-raising me light PF, but I haven't seen anything out of the ordinary postflop.

What's your play here?