There are a number of people who think Chester Taylor will have a breakout year with the Vikings, but the Ravens made a smart move by not pursuing him hard during the offseason. Taylor got a big head from the success he had last season, and he was extremely moody. He let most of his teammates know that he did not want to return to Baltimore before the end of last season. It wasn't a shock that the Ravens weren't aggressive in negotiations. He was a malcontent, and the Ravens had to let him go.
As for B.J. Ward, his days were numbered after he disrespected Brian Billick in training camp when Billick was telling him to cut down on the contact during certain drills. Billick wasn't in Ward's corner last year, and thought about cutting him, but several assistant coaches supported Ward. Once they had the disagreement in training camp, it was virtually over. That's when Ward started coming down with the migraine headaches. He is definitely looking for some kind of injury settlement, and will probably get one.
Moore's hernia injury is legitimate. Soon after he came back, you could still see the pain in his face going in and out of cuts. Billick will keep Moore around. He likes tall and fast receivers. The kid does have potential.