Update: after a conversation with the IG, and some calls made by them and my MPS to AFPC, AFPC has begrudginly agreed to process my application while I'm deployed. They recommend that I re-apply as they thought it would look fishy if they re-opened my closed application (no sh!t-it was fishy when you guys refused to process it, not in accordance with YOUR regs). So since I'm deployed until May, I have to wait until 180 days from my requested separation date before I can re-apply.
For those of you getting close to a deployment, I would apply for PC now and hope your leadership doesn't send you while it's pending, because as I'm learning, they're not going to send you home from deployment so you can separate. The crappy thing is, the reg still says you can get sent TDY/deployed while it's pending, so...
Also, for the guys (aircrew) currently deployed looking to submit an application, if you're getting any pushback, I recommend going to the IG. AFPC isn't following their own regs and the IG is probably the only way you can get them to do their job. AFPC basically told my MPS that they didn't want to set a precedent by "deigning" to process my application while I'm deployed.
side note: If I followed my regs like AFPC, I wouldn't have wings anymore.