Will these thoughts remain?

[anony]

Hi
SWIM isnt a long-term experienced ecstasy user, but has binged recently. He probably consumed 50 ecstasy pills within 6 months. He got drunk recently (last night) and during his "hangoer" he experienced ecstasy-mindy-related thoughts, so he says. They wasn't exactly like being on ecstasy, they wasnt fast, furious and they wasnt as random. But the thoughts related and lead from one to the next, like ecstasy. SWIM was at work during "hangover" and SWIM's job doesn't really help SWIM as there was only 2 people working (inc. me), but are the thoughts due to excessive ecstasy use? Will they remain or go away?
SWIM wants to quit regular drug(ecstasy) usage if possible, but with a mind-frame lile this, it doesn't feel like there's any point. Excessive use leaves you in your own mind and with in your own world.
Because SWIM has used ecstasy previously, excessively, will SWIM remain like this? He is aware his current mind-set is different due to previous ecstasy usage. Will long-terms with no usage persue to a "normal" mindset?

Thanks