Thanks for your quick response Kelandon,
I already looked at that, but it doesn't explain how to make a 90 degree turn with out any walls to bounce the block off. At the top of the stairs you must slide the block along the edge until you reach the center walkway, at which point you need to make a 90 degree turn. There are three directions from which you can push the block: East or West just pushes the block past the center path, South just pushes the block off the ledge and down a level. If there is no way to 'pull' the block North, I have to believe this is a Bug.
Someone PLEASE prove me wrong...
Smorri