How do you know what he expected or intended the cue ball to do? Not trying to be rude, just asking ;-)
I don't KNOW for a fact but have played enough pool with enough decent players
for a well-educated guess. On the 5 he wanted to go around the 8/10 not pass them
twice on the right (cause you'll scratch way too often),
on the 6 he might have been trying to do what the cueball did, hard to tell, but on the 7
again he was most likely trying to go 1 rail less for the 8 in the side.
gr. Dave