Yes i've been getting this a bit too day and night - in my case my neck (which was injured in my incident) is the cause of my head twitching so some work on that area could help you guys too.
Some possible solutions...
I have found taking Magnesium Citrate 1 hour before bed helps.
Also magnesium spray/oil massaged directly into the neck calms things down too.
The other thing is are you on any sleep medication at the mo?
Don't whether it's just me but every time i've taken anything like Benadryl, Zopiclone or Amitriptyline it magnifies the intensity of my twitching 10 fold!?
Its horrendous... For instance my jaw snaps shut waking me instantly with the feeling like I've been punched in the face despite the mouth guard that i wear for grinding... Had to resort to sleeping with a sports sock in my mouth on a few of occasions to "soften the blows"! Not totally pleasant but it does the job should this happen to anyone else

Anyhow, good news is a few days after stopping the meds the twitching calms down loads,