Yep, I still hear "over" too. Although honestly it's more like " 'fer my dead body." C'mon, Harrison, enunciate!
EDIT: Definitely "over". If you are kind of hoarse after, say, a long day of shooting, the "o" can come out unvoiced, and the "v", if also unvoiced, sounds like an "f". He finally got his voice back on the "er".