Hi Rakamookie:
If you move your mouse over the map you can see a bar with some signs. You can “grab” the minimap and move it down again when you see one hand instead the mouse cursor when moves the mouse over that bar.
Do not press the right mouse button, that hand don’t move the window map, only the map.
I saw the solution on guru (www.guildwars2guru.com/topic/56842-bug-minimap-stuck-at-top-right-corner/). Thx to zhead for the solution, I had the same trouble.
Cya