I have no memory of the title or author.
It is spander. Spike gets really hurt, I believe he is almost burnt alive. He has also lost his memory. It might be after the whole Sunndydale crater thing. Xander finds Spike and the Scoobies go to LA and live in the Hyperion.
The scene that I really remember is that Spike is making some progress and comes down the stairs to find Xander. Willow or Dawn is cooking bacon for breakfast and Spike as a fit cause it reminds him of when he was burnt.