Unfortunately right now we do not have such feature to reset points for users However, this is actually a pretty good idea and I will see if there is anything I could do to add this on the next release or 2.0
I have just installed ES 2 and cannot see any way to reset the points under Maintenance. There is a script "Merge Users Points History" but I am not sure exactly what that does and it is not documented.
Having been testing ES on a development server I would like to reset the points and then allocate them manually to some users (I know that can be done). Is it possible to reset them please?