Rich and Strange Aeons

Brought up in discussion on RPG.net: Lorien had a ship he used to take Sheridan away from Z'ha'dum, but at the end of the series he went all lightbulb. Possibilities:

* He's an interstellar lightbulb, but needed something to bring the mortal safetly.
** ...so he just happened to have his own ship all along, which he later abandoned.
** ...so he 'borrowed' one from the Shadows or their servitors. This was my idea, and it amuses me.

* Advanced races only went interstellar lightbulb when "going beyond the Rim". Also my idea, and it seems more boringly plausible, given that the First Ones use ships usually.