doubleofive said:
You know that between Boba's "air swim" and Luke's lightsaber, SOMEONE (probably multiple people) from ILM looked at this scene frame by frame several times and sill left the Force Kick in. I guess it would be harder to move someone in those days instead of just copy/paste today...

Hey, that film is loaded with goofy humor in the first place, so maybe they just thought it was funny and left it as-is. :p Or, as you say, it was harder to fix then, so it was a 'meh, it's so fast no one will notice' moment. ;)