Dude Gets Punched In Face By Instructor During Tandem Skydive

I don't know a ton about skydiving but I'm gonna go out on a limb here and say getting punched in the face by your instructor during a tandem jump is not exactly normal. I'm gonna go out on a limb here and say buddy was acting a fool and not doing as his instructor told him to, putting both their lives at risk. Never piss off a dude you are strapped to I guess!