Did Cheryl Ladd help facilitate Shelley Hack's departure after one season

[TMC]

If you believe what TV Tropes has to say:

Era magazines in Spain consistently reported that Ladd was jealous of Shelley Hack from the get-go, because Shelley's height made her uncomfortable and she felt dwarfed by it. Ladd also wanted to be "the only blonde on the show". They further claimed that Cheryl bullied Shelley, often to tears, and constantly walked into the producers' office and demanded Shelley's lines, so as to diminish her role. (Ladd was often the star of the episode, since her arrival.) Indeed, Tiffany incidentally had less and less to say as the show progressed. Eventually, Ladd threatened to walk unless Shelley was fired, the Spanish magazines reported that she got her way: rather than deal with the drama, Shelley chose to leave on her own. However, it would appear that none of this ever made the U.S. press. It is unclear if there ever was any truth to these published facts, or from where they were obtained, but Spanish fans still hold Ladd directly responsible for Shelley's departure. Strangely enough, as if to expunge her mea culpa, in later interviews, Ladd often claimed that she took one look at Tanya Roberts when she came on-board, referred to her as a bitch and said something to the effect of: "I don't want to work with her, she is too sexy!" This was supposed to be a self-humbling declaration on Ladd's part.

I've also heard on the contrary that Shelley, according to Nolan Miller, the costume designer for Charlie's Angels, was increasingly difficult to work with simply due to her gaining a healthy ego and being too big for her britches.