It would definitely not be okay, unless you had permission from TGC, which I doubt you'd get (but I guess there's no harm in asking).
However, if you could convince them to release it as one of their products, you'd be okay.
Given the quality of your models, it might be worth trying to cut them a deal.
As an alternative, you could provide a tutuorial on how people with Milkshape or Fragmotion could do a DIY job using the animations from FPSC.
Just some suggestions, I hope you figure it out somehow.
instinct is more valuable than intelligence.....
