PLO8, Make this fold?

[emptyshell]

Villain is ridiculously loose preflop (VPIP 81, PFR 7), but reasonably tight postflop.

$400 PL Omaha Hi/Lo
BUT ( $845.82 ), SB ( $360.45 ), Hero ( $387.70),
UTG ( $274.28 ), UTG+1 ( $605.08 ),
CO ( $189.95 ), MP1 ( $147.40 )

Hero is BB with 6[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/diamond.gif[/img] A[img]/images/graemlins/club.gif[/img] 5[img]/images/graemlins/spade.gif[/img]
++--++

SB posts $2.
Hero posts $4.
UTG calls $4, <font color="#666666">1 fold</font>, MP1 calls $4, <font color="
#666666">3 folds</font>,
Hero checks

<font color="blue">Flop</font>: (13.30) 8[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/club.gif[/img]
Hero checks.
UTG checks.
MP1 checks.

<font color="blue">Turn</font>: (13.30) 9[img]/images/graemlins/club.gif[/img]
Hero checks.
UTG bets $5.
MP1 calls $5.
Hero raises $15.
UTG calls $10.
MP1 folds.

<font color="blue">River</font>: (46.55) A[img]/images/graemlins/heart.gif[/img]
Hero bets $25.
UTG raises $121.55.
Hero ???