Suicidal silkie

My buff silkie rooster which just got his leg healed is now trying to snap his neck, when I go into feed him he is fine but when i come home he is rolling on the floor. I pick him up and he is fine but then he goes and runs into the wall. And it's not a walk it's a full blown sprint. Help I don't want him to be in pain.should I kill him?

Sounds like he has a nerological issue. First the limp and now the running and rolling.
Possibly could be an ear infection, they get a head bob and loss of coordination, but the sprint into the wall, not sure on that one.
You are the best judge of how he is doing, I would reccomend putting him in a smaller area, make sure you check him over for mites and lice, sometimes irriation can cause strange behavior.

Silkies do have a soft head because of their poof, he might have done some damage to himself to cause these nerological problems, if that is the case then he probably won't get better.

Okay will do as soon as I get home