Legal guarding position

[iamaref]

If you microdot the rulebook on this one I think it is a mistake.
NBA - No call.. play on.
COLLEGE - Probably the same... unless someone gets knocked down pretty hard, or if an arm is extended.
HIGH SCHOOL - Look at the whole play to the finish.. see who was more overly aggressive and use your common sense on who was put at a disadvantage and give them the benefit of the doubt.
Probably the more you've seen this play... the more you'll have a chance to make a good judgement on it... and get it right.
My opinion.