That's gnarly. But wouldn't you have to hit the headboard pretty hard to fracture your skull? You'd think they would of noticed damage on the headboard if that was the case. Prob be like Trevor Moore where the public won't ever know what really happened.
i think i heard it was a freak car accident in the case of trevor moore. not sure where, might have been some reddit post. no idea if that's true either.
maybe bob saget hit his head while falling down steps or something and was so dazed from it and maybe from partying that he thought it wasn't so bad, just hit the bed or whatever and nodded off
totally possible to wreck your skull that way.
whenever i hit my head i'm actually super afraid to go to sleep, because those headaches should either keep you up or you pass out, and then you most likely have a serious concussion and should probably be checked out, possibly supervised.