TD27: I hate this spot

[2461Badugi]

I'm used to being button here, and I love it because this is such a ridiculously powerful raise on third. But I have no idea how to defend against it. Button in this hand is one of the best 5/10 regulars.

Triple Draw 2-7 Lowball Limit ($5/$10) (converter)

SB ($227), Seat 6
BB ($61), Seat 1
UTG ($538), Seat 2
MP ($139.50), Seat 3
Hero ($534), Seat 4
Button ($186.50), Seat 5

Button at Seat 5.
SB posts $2. BB posts $5.

Hand: [6c 2s Qc 7d 9c]

Round 1: (1.40 SB)

<font color="red">UTG raises. </font><font color="#666666">MP folds. </font><font color="red">Hero raises. </font><font color="red">Button raises. </font><font color="#666666">SB folds. </font><font color="#666666">BB folds. </font><font color="green">UTG calls. </font><font color="green">Hero calls. </font>
UTG takes 2. Hero discards Qc 9c. Button takes 1.

Hand: [6c 2s 7d 6d 3c]

Round 2: (13.40 SB)

<font color="green">UTG checks. </font><font color="green">Hero checks. </font><font color="red">Button bets. </font><font color="green">UTG calls. </font><font color="green">Hero calls. </font>
UTG takes 1. Hero discards 6d. Button takes 1.

Hand: [6c 2s 7d 3c 9d]

Round 3: (8.20 BB)

<font color="green">UTG checks. </font><font color="red">Hero bets. </font><font color="red">Button raises. </font><font color="#666666">UTG folds. </font><font color="green">Hero calls. </font>
Hero discards 9d. Button stands pat.

Hand: [6c 2s 7d 3c 8c]

Round 4: (12.20 BB)

<font color="green">Hero checks. </font>

Total pot: (12.20 BB - $122)