Get that knife ready, a clean table, and a pot of hot water on a slow boil NOW!Mine comes comes at me when I open the run for them to free range, feeding them, giving them water, even when I’m giving him treats. These are over the last month. Once they heal they leave large scars with a lump underneath.
You can catch him off the roost tonight and put in a cage for overnight if it's too late right now. Commit to what you need to do. When you pull him out of the cage, get a firm hold of his legs and massage a bit under the wings right before you do what you need to do with the knife. That will calm him down momentarily so he doesn't flog you before you pay him back for all the blood he's drawn.