Many years ago, Liz Wilson came to my home and taught me how to do 1-woman wing clips on all my birds. For a few years afterward, I had good success with greys, macaws, 'zons, and my rowdy Moluccan 'too, plus many smaller birds. But then I began letting everybirdie grow out their wings and learn to fly again, safely inside, of course. I've gotten too rusty to talk you through Liz's technique, but I think she still does phone consultations if you want to see if that would work for you.
Another idea is use of Barbara Heidenreich's videos:
http://www.goodbirdinc.com/parrot-store.html Barbara has long been a trainer for Steve Martin, teaching zoo animals who're much too large and wild for "toweling" to participate in their own necessary vet care. Her techniques (and her colleague Susan Friedman's) are all based on only positive reinforcement that follows a step-by-step progression that can often be completed in far less time than you might think. Birds love learning!
Good luck!