ok I'm headcanoning that after 5 seasons of being (almost) always the first one to die jimmy just lost it completely and went wild in this one. he's not the canary of the group anymore, he's an agent of chaos and WILL make everyone explode for seasons of being a failure by design. his curse is broken and jimmy is willing to prove it by any means necessary (he's freaking crazy)
the canary won't die in the mine if it blows the whole mine up
maybe this is the reason he had to die first before. bloodlust affects him more than anyone else, but now jimmy is finally free