Obviously, Van Pommel feels the account is an excellent example of veridical perception while the brain is not active as details about the surgery were included.
I don't think anyone questions that point. What that does say though is that Van Pommel has a very low threshhold when it comes to what he is willing to consider as evidence and that he could not find anything that would approach even a minimal standard of what might be considered scientific evidence.
The report is, at the very least, a third hand account of an assertion wrapped in rumour.
Aslan is not a Tame Lion