Nope.
That's why I asked you if it over revved, or seemed to spin up when you had your malfunction. IF, the driveshaft spun free when those gears broke, then it certainly would be a good thing to look at.
When something breaks like what you had happen the trans (specifically 727) can spin up 2 to 2 1/2 times the engine RPM, damaging it internally, or worse yet exploding it, sending shrapnel everywhere up to penetrating the floor/hump and into the interior.
904 would prevent that, OR rebuild and enhance the 727 trans.