Justin, the reason you experienced this, is because of the acid you've been doing lately... I know for a fact when you smoke weed, even weeks after a good trip (on acid or shrooms) you can experience intense CEV's. Even you can get some minor OEV's too. I've experienced similar things after a shroom trip.

One monring i woke up, and the second i woke up, i looked at my ceiling, and i saw a black and purple spider, made of smoke... It was crawling towards me for about 4 seconds, and it vanished (this happend 2 days after a shroom trip, and i was half asleep)

Its normal man:thumbsup:
and it can be fun.:smokin: