Should I have folded the pot bet on river? (PL O8)

I'm a little new to pot limit O8. I'm used to limit. In this hand I knew I had the nut low (but wasn't thinking about chopping it). However, should I have folded the potted river bet? I know I had no high, but I knew I had the best low. I ended up getting quartered.

Any thoughts?

http://www.pokerhand.org/index.php?p...mp;hand=186058