That's a great point, for plays that can be made within a couple of feet of the sideline. At higher levels I think it is a personal foul to go out-of-bounds to block this guy. However at NF level I think the only thing we could call on R is illegal participation because he would have to intentionally leave the field to make this block.

So for K1 to intentionally go OOB and never return is extremely dangerous for K as the only play he can make is very near the sideline. If the punter can put the ball on the ground within a yard of the sideline then he can just as easily put it OOB at the same spot. So while K may not be technically breaking a rule, though some will say they are not within the spirit of the rule, they are taking a huge chance with this play.