What is there about the "timing" that needs questioning? He already admitted he did it.
I think Hoffman is questioning the "timing" insofar as all these accusations against all these perverts seemed to have all come out at once and so Steve is probably wondering "When are they gonna get to me?"
See, my gut tells me that he's defensive because of Stockholm Syndrome. I could picture Kim Fowley and friends passing young stEve around. He wasn't really there to fix the stereo.
Ask any musician/band about STeVE. Many of them would answer: Who the hell are them?