Hi Tony,

re:
> How can I avoid having so many points when offsetting a curve?

You can try the Rebuild command:
http://moi3d.com/3.0/docs/moi_command_reference10.htm#rebuild

But in general I would not recommend trying to edit the control points of an offset. Offset curves have a lot of points in them because the offset is generated by a fitting process. Just offsetting the control polygon of a curve does not yield an accurate offset curve, see here for an example:
http://moi3d.com/forum/index.php?webtag=MOI&msg=3838.23

- Michael