At 6:53 (and other moments around that time) Justin does the 1 1/2 step bend and you can hear the upper string (the D-string) as a click... like the string slipped below the bent 3rd string.
This is a major ptoblem that I have with 1 and 1 1/2 step bends... and also he doesnt cover the top strings with his thumb or anything. Can and should you care to avoid that string clicking? It happens to me also when I do this classic blues riff where you bend the third string 1 step up and then play the top two strings, eg. bend the 5th to the 7th on the G string and then play 5 fret on B string and 5 fret on e string...
