Yes, Wheeler was so disoriented that he threw himself into a dumpster and died (we don’t yet know the cause of the death).
The garbage dumpsters the truck picked up were 15 miles away in Newark, DE. I don’t see how he could have walked there, do you?
How did he die? Was he shot, stabbed, poisoned? Do we know? This sounds a lot like Arkancide, where the victims shot themselves in the back of the head with a rifle.