I am unfortunately in exactly the same predicament as of about a half-hour ago. Curiously, the surface is 100% flat, and the problem only happened after the application of Microsol. (After two failures, I wisened up and tried one without it, it's sitting happily flat on the side of the vehicle). Never had an issue with Microsol before like that, though in this case the kit is 8 years old (Dragon SA-9)
As I'm not sure that simple repeated sol applications will help me out on this one, I think I'll see what happens if I let the decal dry overnight, then tomorrow use lots of Set in the hope of loosening the decal to the extent that I can smooth it out.
There is hope, however. You should be able to see the crinkles on the cheatlines of this 737. Repeated Microset Microsol applications combined with the odd application of a #11 X-acto fixed everything flush on that one.
NTM