Help me figure out this PLO8 move.

[Wintermute]

You have 4 big cards in a heads up situation against an aggressive player, who raised PF. The flop puts out two to the low but gives you top pair. You check, the other guy pots it. Clear fold, right? I've seen (and fallen victim to) a player w/ the top pair hand calling to see what the turn brings. Release on any low card, if you catch 2nd pair, check-raise or pot-bet. It seems like a weak play on the surface but I'm wondering if it can win long-run.

For example, Villain has following stats:

{{TOT HANDS: 551 - BB/100: (8.0)
VP$IP: 60 - PFR: 18
WON: ($1,801) - CR: 1.43
WSD: 35.5 - W$SD: 54.5}}

$400 PL Omaha Hi/Lo
Seat 6 is the button
Total number of players : 4
Seat 9: Hero ( $447.45 )
Seat 5: zeeman72 ( $424.20 )
Seat 1: Villain ( $346.60 )
Seat 6: HOLDEMVICTIM ( $243.90 )
Hero posts small blind [$2].
Villain posts big blind [$4].

** Dealing down cards **
Dealt to Hero [ 9s Tc Ah Jh ]

zeeman72 folds.
HOLDEMVICTIM folds.
Hero calls [$2].
Villain raises [$6].
Hero calls [$6].

** Dealing Flop ** [ 3c, 6h, Jc ]

Hero checks.
Villain bets [$19].
Hero calls [$19].

** Dealing Turn ** [ Td ]

Hero checks.
Villain checks. <-- I missed the chk-raise, but you get the idea.

** Dealing River ** [ 3s ]

Hero bets [$56].
Villain folds.
Hero does not show cards.
Hero wins $112

Think this play has merit long-run?