Windshadow,
this is completely normal
. Sorry. You have to reload. Xingal must be a fortune's baby if he haven't experienced it so far.
The elevator can get stuck in both modes. It can fail to reach F'lokis Ra but in this case you should be able to click the button and send the elevator down again. It can fail to reach the upper chamber (your case). This is usually the end. You can try Vanish spell as the last resort if you already have it.
Therefore, always save before entering this damned elevator. It's a wise decision to save again before sending the elevator down and going up on its top.