Originally Posted by
jessamineny
I figured since it was a doggy bag (for leftovers) Spoiler: that Neil must be a significant other who Patty left behind (so he's her Leftover). Maybe she hasn't really let go of him, and since the cult members are supposed to let go of everything of value to them, dropping that bag on the doorstep was a symbolic exercise in surrender. I assume she filled it with her own shit, but who knows.
For me, it was just another example of Spoiler: how Garvey is losing his shit. And the fact that the shirts are white was nice symbolism, since things involving the color white seem to be the source of most of his misery.