Notwithstanding that even maniacs get great cards sometimes, preflop/flop was about right. JJ on an all-undercard board is a strong hand even vs. a non-maniac flop raiser/3-bettor.

I would definitely consider a turn c/r (and I rarely advocate the double c/r) to knock out (or extract $$ from) the tagalong CO, or (once CO's spade didn't hit) one on the river for value. Probably the turn.