Fail.
OP, marijuana isn't usually known for inducing hallucinations, but it can happen, but it's rather rare. There is no "cause", THC is simply a hallucinogen and in either large or very potent doses it can cause hallucinations in some people.
Also, drug induced psychosis is a mental disorder on its own, which is an incorrect term for what you experienced as medically it's only caused by amphetamines.
You just had good weed, that's all. I've had weed so strong before it's felt like shrooms or DXM. If I were you I'd be happy you experienced something like that. Drugs are great "tools" for opening your mind and body, and it certainly sounds like you did that. Just look at it in a more positive way.