Dustin Lance Black is recovering from a “serious head injury”. The 48-year-old screenwriter – who is married to Olympic diver Tom Daley – took to Instagram to tell his followers he sustained the injury a month ago and was ordered by doctors to “shut off my brain” to help his head to heal. He wrote: “So I vanished for a while… A month ago I sustained a serious head injury that put me out of commission. Showing little improvement, my doctors ordered me to shut off my brain in hopes of it healing. This has been a challenging, frightening time for a creative type who depends on what’s in his skull…