USAF Pilot report ignored?
I would expect there to be video footage taken if this happened again. The threat that this sort of evidence could be leaked should chill this sort of inaction. In 1985 you would not expect every pilot to have access to a cell phone camera but in 2012 you would.
I read a bit more about the accident and found that the actual behaviour by the Japanese was worse than you said. USAF controllers at Yokuta AB were monitoring the emergency and tasked a C-130 to search for the crash site after loss of radar contact. The site was located and a UH-1 Huey was directed to the site. The Japanese then chased the Americans off and basically left the survivors to the elements. The four survivors reported hearing cries for help through the night that gradually faded out towards daylight.
They didn't ignore just one pilot, they ignored the whole US AIr Force.