Could there be a temporary recipe added into the soulforge to craft a Weaver using an Archproxy as the material.
That would give the player the choice, if they pulled multiple Archproxy troops then they can swap for a Weaver.
There’s no rollback needed, and rollbacks aren’t perfect as there will be plenty of people happy with getting a proxy. And some that would get their keys back but no chance to spend them again until the week changes now.
How does a soulforge recipe sound to people?