I think Wayne had the upper hand at the point that he put in his flanking peg (8.h17). But 9.h16 should just delay the typical pattern: 9.h1610.g1511.i1412.j16, where the typical pattern is 9.i1410.j16. Black is still winning either way. It's not knowing the 9.h16 pattern that sunk him, so maybe alain was wise to trick him with it.
It might at first appear that 10.f16 is a cleaner alternative to 10.g15, but watch out: if 10.f16 then 11.f15. In this case, they are far enough from the bottom that Black still has a chance: 12.i1913.e1714.e19, for example. Still, not as strong as the pattern in the previous paragraph.
These are all still very early moves, and the game could go either way.
It could be that even after the disastrous 10.i1511.i14 exchange, Black still had the upper hand, if he had played 12.i19. It's just barely strong enough that it works on the left, while being strong on the right side too.
It might at first appear that 10.f16 is a cleaner alternative to 10.g15, but watch out: if 10.f16 then 11.f15. In this case, they are far enough from the bottom that Black still has a chance: 12.i19 13.e17 14.e19, for example. Still, not as strong as the pattern in the previous paragraph.
These are all still very early moves, and the game could go either way.
It could be that even after the disastrous 10.i15 11.i14 exchange, Black still had the upper hand, if he had played 12.i19. It's just barely strong enough that it works on the left, while being strong on the right side too.