We also got a TS Roo "pullet" haha happens a lot .
Another alternative is to give him away to someone that doesn't have an issue culling them . Some people post on FB Roos and others collect them up as fast as they are posted !
I wish I could do this instead of the cone ......don't seem to have enough strength. Had to do 2x to sick hens a long time ago and it wasn't quick enough 😢