Well, I drained the diff and couldn't find the thing. I used a set of telescoping "jaws" and still couldn't get it out. I tried flushing it out but to no avail. It stayed, the diff's filled back up and I've driven it. Nothing exploded.....yet. Just gotta hope for the best.
I ended up taking my front drive shaft to a specialist to have the u-joints replaced on the roto-flexer coupling on the rear of it. $50 bucks to get all 3 replaced (I provided the joints) and the shaft balanced. If your local to Charlotte, it's a little mom and pop shop called Universal Specialist off Cannon Rd. Turn around was 1 day.
Again, thanks for all the advice.
Merry Christmas to all.