Shoulda, coulda woulda, they moved UP to grab him, to try to negotiate from the position that he was "over drafted", which is BS btw, wouldn't make any sense.
This whole Over drafted opinion is from the Experts, but not the FO, I'm sure Buddy Nix thinks he got him exactly where he thought he would.
As others have pointed out, 3rd rd picks are, for some reason, becoming difficult to sign, but rest assured TJ will sign, he'll be in camp. There is no "message being sent" by signing some scrub off the street.