Shutter blade problem in Nikon D5000_________Motion Lapse Film

This Nikon D5000 had some problems with the shutter blade, they was not broken but one blade was stuck with another blade.
The blades are made of a very thin, but very strong type of plastic...
So I gently do some small movement with a flat dentist tool, to get them free, and then it turn out to be a real success, so the shutter work's again