Hmmm. How do you have 2 post docs if you don't have the doc, again? Clinical psych here in USA is different from there in UK, right?
Ok...even if you go with tail between legs, go back to your job and beg to be reinstated? Tell them a big misunderstanding and stress upon your part... (we all eat crow now and then.)
And, print out the requirements from whatever site has them... and contact an advisor at University to guide you. Just because you haven't made it yet, according to them, doesn't mean you aren't well on your way and can still achieve what you ultimately want. You're young enough to give it a go!

I still think you're great, pegasus.
This has no bearing on who you really are.