Front drum self-adjuster

Now I've done it. On my 74 Dart 225 904 I went and over-tightened the self-adjuster on the passenger front drum and can't get it to back off. If I try to drive it it pulls severely to the right. Does anyone have a tip or trick for backing off the self adjuster? I'd just assume not ruin the drum as I am not ready to do a disc conversion. Any suggestions would be welcome.