I really don't think Jesse hated Walt any less in that scene, nods included. Jesse refused to kill Walt because he knew that's what Walt wanted and he's done being Walt's bitch. He knows Walt will die anyways and he'd rather it be slower.
And come on. Jesse doesn't care if Walt calculated it perfectly. No one would care. It's psychotic logic that doesn't really work. "Oh hey you only HALF poisoned my quasi-son? And it was to convince me to kill someone? Oh yeah then we cool." is not something anyone sane would ever think or say.
Another reason I don't think Jesse would get the full brunt of indictment for anything that happened. When the police arrive things actually look pretty cut and dry. I'm not sure they'd even bother dusting for prints.
I think there was a mixture of love and hatred for Walt.