If the “simplist explanation” is correct, your own take seems doubtful. A drunken Gibson is busted by a sherrif’s deputy named “James Mee?” Sounds less Jewish than Chinese to me.
Try this — a deputy gets Gibson dead to rights for DUI, but the dep. has been goaded by the anti-Gibson “antisemite” propaganda campaign Abe Foxman and his cronies whipped up to greet “The Passion of the Christ.” Well well... now he has a drunk Gibson neatly busted. Maybe couldn’t resist saying “So how’s it feel to get busted by a JEW, huh Adolph?” Then he can claim to be shocked at the response. That the officer was later investigated for leaking details on the case to the press supports this fairly obvious solution.
Moreover nothing the Officer said or did would excuse Mel Gibson's “Jews are responsible for starting all the wars in the world” lunacy.
Other than the fact that Gibson is a raving loon and raving loons say loony things when they rant and rave.