Twixtor can help a lot in repairing defects like
this, the easiest method being just like Pete described.
Also, depending on content, Reflex Morph
can help further, possibly in combination,
to fill in for the bad frames that you 'skip' using
its picture-key function.
-Shin
shin kurokawa
maximum output designs, inc.
http://www.maximumoutputdesigns.com