1. I think if his original banning was for behaviour that warranted banning, than unfortunately he must remain banned. You must maintain fairness. Can you imagine how S4S and Lyte would play such a thing everywhere else if we let PD back simply because he came back from the darkness. If we unban PD for converting, then you have to unban every single person who changed their opinion on an issue here, despite the reason they were actually banned.
2. I admire his willingness not only to see the err in his ways (on numerous occasions now in fact), but to come clean to the very people he was fighting against. I can't say I am completely surprised, as his age and intellect level were factors that I found worked against him being such a die hard CTer. He also seemed to argue, when he argued instead of insulted, with a certain amount of "clarity"...
3. There are plenty of other forums/ways for him to express his new views. If he is LIHOP, then let him come to SLC and CS blogs and express/debate this. Let him go to LC Forum and argue with Killtown over it.
All in all, despite it in my nature to give everyone a second chance, in this case the banning must stand. That said, while I do not agree with a ban reversal, I would agree to a probationary period to see if his behavior (I assume the reason for his banning) has changed.
TAM