This does smell quite a bit like Donk-AK, although slowplayed JJ is possible, I guess. In any case, you got check/smoothcalled twice, and then he leads out for a PSB on the river? Unless he was chasing the OESD w/ 910 really hard and it's an attempt to salvage his busted draw, I'd say this is a crying fold. Whatever happened, please don't kill yourself.