bad monday

[bbj3316]

Tried my truck at wot for the first time today. All went well until tranny hit third, that's when the rear universal twisted out of the yoke. Torked the tranny so hard the case cracked, some pieces came off, driveshaft broke off tranny tail. Blew off the flexplate dust cover and took some teeth off the flex plate. Only hope the engine and rear are ok. Anyone ever heard of this severe result of losing a rear universal joint, and steps for preventing in the future. Universals were new, straps were new. I'm puzzled!