One of my colleagues had a drawing where the UCS had been rotated to suit a particular part of the drawing, however on setting the UCS back to World the World UCS was also rotated. AutoCAD helpfully shows the cursor as skewed if the UCS icon is not visible or obvious.
This is due to the Plan view not being updated to suit the World UCS and is the exactly the same problem as noted in my UCS World post. Just type PLAN and select World to get back to normal. You can always tell if you are in World view by the UCS icon having a little sqaure on it. Any other view will just show the two axes.
As this is now really an LT problem as the full version of AutoCAD has a nifty rotate view button I have written a couple of scripts to set the UCS to an object and then rotate both the Plan and UCS to suit that object and also a useful one to get back to a World view. These will be published shortly as part of my customising AutoCAD series.