Oddly enough I've just updated my page on that day's Earth images to cover this claim.
http://onebigmonkey.com/apollo/CATM2/A17/08/a17_day08.htmlHe claims they were taken at the same time, when they were taken about an hour apart, and the Earth's rotation is entirely consistent with that.
The Hasselblad was taken at the LM, and features the LRV in it, well before the two astronauts separated - Schmitt to finish off some ALSEP photography, Cernan to park the rover. The image from the TV camera was taken as Cernan was about to board Challenger for the last time, after he'd parked up, secured the LRV and walked back.
Crouching Tiger Hidden Bell-end also features in a few additions to the end of my page here:
http://onebigmonkey.com/itburns/bunker.htmlHe claims to work for the CNSA, and that China has proof that the landings were faked and are blackmailing NASA. He says that all the photos taken at the moon are genuine, but taken by robotic probes and cameras mounted outside the spacecraft. Not quite sure how he squares that with all the photos featuring astronauts on the lunar surface, or the ones obviously taken inside a spacecraft.