5NL Flop TPTK on Coordinated board villain pushes.

[Bubbagump]

No Reads. This hand occured during my first orbit at the table and I've never played with the villain before.

PokerStars No-Limit Hold'em, $0.05 BB (9 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

saw flop|<font color="#C00000">saw showdown</font>

UTG+1 ($9.87)
MP1 ($7.28)
MP2 ($2.18)
MP3 ($9.93)
<font color="#C00000">CO ($10.49)</font>
Button ($5.10)
SB ($5.69)
<font color="#C00000">Hero ($4.90)</font>
UTG ($5.79)

Preflop: Hero is BB with A[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/spade.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls $0.05, MP1 calls $0.05, <font color="#666666">2 folds</font>, <font color="#CC3333">CO raises to $0.3</font>, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $0.65</font>, UTG+1 folds, MP1 folds, CO calls $0.35.

Flop: ($1.42) 4[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $1.3</font>, <font color="#CC3333">CO raises to $9.84</font>, Hero?

Against a complete stranger, is this an insta-call or insta-fold? If this situation came up in 25NL or 50NL would the decision be the same?