Just want to thank everyone for their support on this, (esp wes i really appreciate the gesture youre aces in my book!) update: this guy owns the po box, my brother shipped with 2300 insurance on the package. He went to the post office where he shipped it and the guy couldnt believe it! he immediately pulled up the records from chino hills post office and printed it to him, suffice it to say I have his signature that he himself picked up the package on his po box he also had to produce id to retrieve the package, all this information was conveyed to PayPal, so its still possible they will do the right thing, I personally dont know how this member is still not banned.
That's some signature, and the address is even less legible. Good luck with this and keep us posted. Doubt PayPal will do anything but look for excuses, but it seems like you've at least got a start here.