A few comments.
Shane is an empty pink tank top. We see Ian as socially awkward, but really Shane is too ... only taller!
Dan said last night that all Shane would have had to say to F/B is sorry, but it wasn't personal. Instead Shane starts blathering
and goes on the defensive. Personally, I would have told them I didn't want to talk game and asked them to change the subject or please leave the HOH room..
Regardless of influence, I do believe it was Shane's decision because they asked HIM in the DR if he was sure he wanted to this so
at the end of the day ... the final decision was his and his alone. And as they keep saying ... he's the one who did or did not put the keys in the box.