Judge abruptly turned, blocking the way, leading to profanity? (8)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

A reversal (turned) of GAUG[e] (judge, ‘abruptly’) in LANE (way) – I think the definition is a reference to the fact that a profanity is sometimes met with the admonition, ‘Language!’