In sequence 1, your Humiliation (a) does allow you to continue the sequence you started with your Grab, and (b) does allow you a free basic attack. I believe that, technically speaking, the free basic attack occurs before the follow-up to your Grab.
In sequence 2, I have no idea. Well, that's not entirely true â€” I can say that the Backlash would not, in any case, inflict the special effects of the Poke in the Eye, because Backlash specifies that it does "counter damage" only.
I'll ask John or Michelle to drop by and give some kind of ruling on the Backlash issue.
Thanks for asking, and glad you're enjoying Lunch Money!
Poke in the Eye allows the attacker a "free shot" during which you are "completely helpless " and "may not attack or defend yourself." All this adds up to not being able to play Backlash, seeing as how it's a defense card and all.
Again, the rules for Backlash say "It causes the attacker to suffer the counter damage his or her attack(s) would have caused" ... it doesn't say anything about countering effects. Since Poke in the Eye doesn't do any counter damage, Backlash has no affect on it.