I see; I thought the message meant that you didn't get time to do that area, but that there was other stuff to do if you backtracked.
SPOILERS
Yes, I got it in the top left of the temple area, and also if you backtrack all the way outside you can get up top with the double jump and it errors out there also. Oh, love how you pull the camera wide in that whole section; really gives it a cinematic feel and reminds me of Uncharted also.