Vicious is innocent - again

Every so often, there's a small flurry of "proof" that Sid Vicious didn't murder Nancy Spungen. Steve Dior, who was in the Idols with Vicious, is trying to clear Sid's name. It was the drug dealer wot done it:

"Sid didn't kill Nancy, I know that for a fact. I know who did it. He was a drug dealer from New Jersey who robbed the flat where Nancy was stabbed. Why would Sid rob himself?

"This guy's fingerprints were on the knife but New York Police didn't want to get into it. It was a case closed if they pinned it on Sid, they didn't care if Sid Vicious went to prison. I'm trying to tell more people about it."

It's, admittedly, plausible, although "it was the drug dealer" seems to be as simple and pat an explanation as "it was the drug-addled punk". Why would Sid rob himself? Perhaps to pay for drugs? It's not like he was exactly a clear-headed young man. The truth isn't ever going to be known, but a small cottage industry is thriving on the strip of doubt.