I would disagree. The "attempt" at Antrel Rolle involved a low-ball offer that was not competitive with what he had on the table. As for the Ryan Clark deal, if they would have added just a little more butter to the top of that deal, he was theirs.
They didn't feel urgency about the safety position and they're not going to think they've immediately solved it with a late 5th round pick.
If they thought Reshad was the answer to a position of heavy need, but they weren't sure he would make it to their 6th round pick, why did they take Nolan Carroll in the 5th round over Reshad Jones? There was no surprise that Carroll was still available. That's where most would have had the guy projected (including the Dolphins, who put together mock drafts just like we all do using a lot of the same information).
It's just very unlike an NFL front office to leave a position of heavy need in the hands of a late round draft pick rookie, especially a junior. It's very rarely done that way in the NFL.