Moving at an angle through the zone?
At an angle, perhaps, but not corkscrewing or anything. The difference wouldn't be more than a few dozen %; we're still talking about a timescale of hours here.
FWIW, Tomalak's Warbird was tracing the scoutship Pi
through the Zone. Would these two vessels have come from drastically different directions? Certainly the Pi
would have attempted to minimize exposure, thus moving across the NZ and then UFP space to Galorndon Core along the shortest possible path, normal to the local surface of the Zone.