Remove (Destruct) multipoint instance.

Hi I noticed that the functions

  MultiPointSDK.Instance.UnRegisterMouseDevice();
  MultiPointSDK.ShowSystemCursor();

are missing in the sdk 1.5. Can someone help me how to turn multimice back to system mouse on an event ( say a  click of a button)?

I am currently in a dreadlocked position. Any help would be much appreciated.

Thanks in advance