I doubt it. The Diamondbacks have really improved their bullpen (on paper, of course) from last season when they had the worst bullpen (5.40 ERA) in the entire MLB.
Juan Cruz
Terry Mulholland
Jason Grimsley
Luis Vizcaino
Brandon Medders
Jose Valverde
That's not bad compared to last season.
Halsey is a decent young pitcher but there's no way he has the same value as Anderson. Like I said, either Beane was high on something or that article was BS.