That's one hell of a magic trick.
Yeah...the law didn't specify one foot in and one foot out....just that inside you had to be in plain sight and outside concealed, so if you were all the way in or all the way out you had to be violating one side of that law.
The poor motorcycle guys would have to balance on one leg with the other up in the air over the saddle....hopping around while they repositioned their weapon.