If your getting beat up by a kid, Remy then perhaps maybe you need to put down the pen and pick up some weights. Haha. J/k.
In all seriousness though.. I would make him march his ass down to the nearest tree and pick out his own switch. The humiliation of having to do it in front of his sister may be enough alone to make him stop. Not trying to start a huge debate on this issue, but sometimes it's ok to spank a child.