[quote=@Fractured]
From the perspective of what would actually happen, my intuition is that on the scale of Existence, total absorption would also include the absorption of spacetime, which wouldn’t leave much to go back to. On the other hand, assuming that is what would happen, he doesn’t have to [i]know[/i] that.
[/quote]

But I wonder if absorbing spacetime means absorbing all of it or just what fabric of it exists at the current moment, although I suppose that's more of a meta-time type thing.