Dave Dineen, saintjohnrailfan and Kevin Gaudet were fortunate to get a cab ride in an NB Southern engine before the June 19 westbound went out. They both posted their videos, so here they are. First Dave's:
Matt aka Saintjohnrailfan posted a video of the westbound leaving in the dark.
Finally, Kevin's (as links).
first, second, train leaving Saint John.