I found the email you sent last night, yahoo put it in the Spam folder.
I've never done 2 at a time anything with ML, though I can 'see' how it works. I think it would work okay for the R glove, to have the CO sts 'backwards', you just want them between the gusset and hand. You may need to use another end of yarn to CO with, then drop it when you continue on with the hand, and use that for the thumb later. Would that work?