50NL AK facing strange PF raise size

[nogenius]

PokerStars No-Limit Hold'em, $0.50 BB (6 handed) Hand History Converter Tool (http://poker-tools.flopturnriver.com/Hand-Converter.php) from FlopTurnRiver.com (http://www.flopturnriver.com) (Format: 2+2 Forums)

Hero ($51.40)
BB ($44.35)
UTG ($29.95)
MP ($40.30)
CO ($84.40)
Button ($51.85)

Preflop: Hero is SB with A/images/graemlins/diamond.gif, K/images/graemlins/spade.gif.
<font color="#666666">1 fold</font>, <font color="#CC3333">MP raises to $3.5</font>, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero ???</font>

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Villian is 35/7/0.66 over 80 hands.

AK is a standard 3-bet for me PF in most situations, but the open raise by MP here is abnormally large (typical in these games in $1.5 to $2). In addition, the raise comes from EP, while I have the worst position possible.

What's your move here PF, and your plan on a A or K-high flop and blank flop if called?

[Abramovic]

Have you seen him raise a standard size previously or is his usual preflop raise this? I think regardless I would 3 bet to 9, fold to a push, and if called C-bet just over half the pot on the flop. Your OOP, a call preflop is a poor play. Raise or fold preflop I think.

[PietM]

A big raise PF usually means weakness. I've seen villains do this a lot with JJ/TT/AJ type of hands. They want to take it down right away.
I'd certainly 3bet here, make it a potsize raise.