I toasted a few of them already using w/o cutting fluid; should be easy enough to sharpen (Drill Dr. is on my wish list)
Yeah I think you'll need to totally regrind them rather then just "sharpen". (As in grind the pilot point right off and regrind to a regular 118 degree for example.)
If anyone does know how to resharpen them "as is" then I'd be interested to know.