Brian Mitchell HOF?

he would always do about 2 or 3 halfback passes a year

Don't remember him ever playing QB though
Yeah, he did play as an "emergency backup QB" situation in 1990 with the Redskins during the infamous "Body Bag" game where the Eagles defense knocked out or injured both the starting Redskins QB, and both backups during a game and IIRC, that probably is what RaginCajun83 is referring to.

Ironically, even though the Redskins lost that regular-season game and had both starting and backup QB's knocked out of the game, it was Washington who ended up having the last laugh as they defeated Eagles in the WC round later that year and essentially ended Buddy Ryan's tenure in Philadelphia after 5 seasons.