Sgt Slaughter

Was Slaughter brought back in 1990/1991 with the sole objective to lose the title to Hogan? Or was something else planned?

He was technically brought back to do the big traitor gimmick with a different slant where he just kind of hated America, but the Iraq war proved too tempting for Vince not to tie into and the character got altered into the version we saw on TV.  The plan was always to shoot him to the World title and then job it to Hogan, absolutely.