Slightly off-topic but actually it all happened while I was testing with X-Plane for this event

I always use, especially during VFR flights, to switch between the cockpit "normal" view (for flying) and external view (for visual navigation and sightseeing). While doing so woth XP-9, "something" suddenly happened to the view system because since that moment, terrain in cockpit view was turned with 45 degrees (so when I looked "forward", I was actually seeing the terrain on my right).
I could not find any command to reset the view, and was of course unable to land the plane this way - test aborted. Now am I missing anything? Was there any way to restore things to their normal behaviour?
Actually his is the worst part about X-Plane: despite some obvious advantages, whenever I try to use it I feel like an absolute beginner, and aware that many things can happen that will prevent me for completing a flight.
Some extra details if anyone can help: the "something" happened when I switched from "circle" view to "forward" view. After the view actually changed, I could see the terrain "scroll" in front of me. Afterwards, I tried several other views, but every time I came back to "forward", it was still broken.
Also, not sure whether this matters, but I was flying the B1900D.
Thanks for any help.
Andrei