Himself's just got in (discharged himself though). All is fine with his head but he will have to have it checked again in a year or so because the bit that broke is in a dodgy place. (Can't decide if this means he is well enough for me to nag or if I have to wait at least a whole year.)
He wasn't supposed to leave until doctors' rounds but they weren't concerned about him, it is just their procedure. He did stay laid flat on his back for the five hours that they told him too. He feels fine and has bought himself some bottles of beer as a present to himself.
He's been fighting fit for a while (he has been very lucky) but I wanted it confirmed by the head doctors. Bit disappointed that they will have to check him again due to the placement of aneurysm site but better safe than sorry.