the "saber dart" in aotc was originally a "khyber dart" (or however it's supposed to be spelled.....it's an old idea that's been hanging around in one form or another for years.....
thing is, i always found it vaguely amusing....isn't khyber an old british euphemism for........you know........ermmm.....
carry on up the khyber anyone?.....
No, the Kaiburr crystal is a part of Lucas' vision. That isn't just a rip off of SuperShadow. SS just found it and made up more BS about it, but the Kaiburr crystal is real according to the Lucas' vision. If you read some old drafts of the OT by GL, there's alot about that crystal.
But, I do not think Anakin will be healed by that crystal.