I never said anything about a drive exploding, those are your words. I've never seen a drive just explode, this isn't the movies. I have seen major external damage due to underwater strikes, but again no explosions
I always take a pragmatic approach to troubleshooting and repair as do many others that post here a lot of whom have provided very sound information and advice that you've decided to ignore, but that's your choice and you go with it
Getting back to your issue, no drive explosions can be foreseen due to your issue however I have seen more than a handful of bravo uppers that lock in gear after experiencing hard/stiff shifting and no analysis of internals were performed. Cone clutch will force weld itself into the gear clutch race and I've never been able to get one apart. So, good luck with the shifting issue hope it goes okay for ya