Posted By:
PC"I sent the card in to be reviewed by PSA and I got a call from them stating the card had been swapped out and was really a PSA 2."
This isn't a case of PSA changing its mind on the grade, PSA confirmed that the card was switched. And the fact the seller wouldn't take PayPal for only this auction confirms that the seller either did it or knew about it.
The fact that 90 days has passed is irrelvant outside of eBay. Call the local police deaprtment where the seller lives. They will assign someone to investigate (but it might be months before you get any answers). You might also fill out a mail fraud complaint with the post office.
Keep in mind that you also have PSA backing you up here -- they can confirm that you sent a PSA 6 Johnson portrait to them, and that they believe the card was swapped out of the holder. You also have the scan from the auction showing the same card in the frosted holder (before you won it).
Just be sure to tell the seller you are on to him, and let him know what you are going to do. Give him a chance to come clean and give your money back.