Variety reports that NBC has become -- to paraphrase one of the network's recent flops -- its own worst enemy. The company ousted both Universal Media Studios topper Katherine Pope and NBC Entertainment exec VP Teri Weinberg on Friday in a pre-weekend Peacock bloodbath. Alternative topper Craig Plestis, who's been negotiating his exit for weeks, will also be out by the end of the year. Weinberg is expected to remain at the NBC U in a different role. Pope will exit entirely and is scouting for her next step. (Insiders said Pope was offered a top job at ABC Studios earlier this year, but that NBC would not release her from her contract.) The move comes as NBC U looks to toss out its traditional network-studio structure, particularly in light of its rough fall performance. NBC Entertainment/Universal Media Studios co-chairmen Ben Silverman and Marc Graboff started informing staffers of the changes Friday.