If the decal was dry then a quick brush of future should not have caused any reaction or wrinkling. Was the coat of Future before decals completely dry? Most recommend 24 hours, 48 is better. I am thinking the Future reacted with itself on the under layer, as it will soften itself.
Window cleaner (with ammonia) will remover the Future (also the decal) You will just have to source out a replacement decal and start over.