Was it you that said he gets deeper and deeper into his fantastical delusions when he's stressed? Here's why I believe that wholeheartedly: one night after finding out that the place we had been crashing at was no longer an option, we had to sleep in a park on the bank of the Delaware. Those of you who have been following Phil for a while may remember his "cave". What he called a cave was really no more than a crack in the rock. You had to crawl in backwards on your belly, and with all the shit he had piled in there, there wasn't enough room for two people. Naturally, I refused to sleep there. I wanted to call 211 (the hotline for resources in the US, you can call and give your location and ask for things like shelter) for a place to stay, but he guilted me into staying with him. This was also in the middle of summer, on the bank of the river, on the east coast. So we were concerned about mosquitoes. But I was unable to start a fire with the materials we had. So it was stress on stress on stress and he couldn't cope as " ahuviya", so "amaterasu" came out.
Tldr: Phil is a giant man baby who can't handle stress