isolating, and the THC-Withdrawal — "in fact is experiencing some of…"
in fact is experiencing some of the radical loss of concentration that attends THC-Withdrawal
Context
Hal's secret quit surfacing in recovery's own vocabulary and symptoms: he tells the girls he's "isolating" — the exact term the rooms use for the addict's dangerous social withdrawal — and, unable to hold his attention on the film, is in fact suffering the radical concentration-loss of THC-Withdrawal. He is white-knuckling a cold quit with none of the Program's language available to him as anything but irony, the withdrawal running in him unnamed while the recovery world names the identical thing a click and a half downhill.