Wow what happened on the turn

[bbartlog]

Until I saw the HH I thought you were talking about an unpaired board. OK, so you have a bunch of stuff, but it's not that hard for opponent to have a better high, and with one card to come your nut low draw is not worth as much as it was on the flop.
Personally I suspect the str8 flush. But who knows. Opponent might also be trying to use the board pairing as a scare card.