He doesn't see it coming.
One moment, like the millions of moments before it, he's bound in an empty tin a good three feet underground in the backyard of what must be his least favorite magician so far, cramped and bored out of his wits and planning his incredibly drawn-out and uncomfortable revenge on the woman who decided that this was such a great punishment.
The next, he feels – he would compare it to being slurped through a straw, but it's at least twice as weird as that and infinitely more freeing. His essence unfolds into the Other Place, and he luxuriates in the sensation. He's never been so glad to be home.