I've released version 0.2.0 of PixelSnap. It fixes some listed bugs, and also includes two features to make for prettier end results:
1. shifts node handles as well as the node itself, meaning your nice paths aren't broken
2. resizes & repositions a path, before modifying the individual nodes. This will make it work much better on paths such as rectangles, which can be made to look perfect with a simple scale/shift.
You can download it from the homepage at
http://code.google.com/p/pixelsnap/
Regards,
Bryan