I have been to a few meetings run by the Eating Disorder Association or B-EAT as they are now known in different areas, they are run differently to the ones run by OA I think. There is more of a discussion rather than one person at a time giving their own 'speech' on their experiences. And they are largely run by people who have had experience of an ED, not qualified persons. And you don't get a 'sponsor'.
I personally found the EDA/B-EAT largely depressing and unhelpful to be honest, but I know others have found them helpful.
It would be great if there was a drop in group that was free to all that was led by a qualified therapist, that talked about practical things you can do, but I guess that would be difficult. I know of a service up north somewhere, I can't for the life of me find it on the web now, but I will add if I do. But they are leaning towards this and have had a lot of success.
I guess different things work for different people though and as you said, you really have nothing to lose by trying different approaches.