too little too late. if the estate's claim is true, he should lose his medical license, doing this would have put him in conflict of interest-- harrison's dying would make the guitar more valuable, especially if it was the last autograph he did. so the doctor stood to profit from his death. not that i think he would have, or did, do anything to precipitate the death, but it's still hugely unethical.
as was said before, i just don't see why they'd make this up. tho, i don't see how they'll prove it, either...
paul