From what little I know, the theory would seem sound.

Kinda like steering a large boat though.
There's a lag.
I do not know the exact timing of that lag, so I fasted for 3 weeks, then pigged out for the week before the test.
Considering my consumption, 30 days should not have been long enough to de-thc-me.
Did the fast/binge help?
Perhaps.
I'd say, bottom line? It can't hurt.

Now I too, wait for someone who actually knows.

Aloha,
Weezard