If LVE hasn't stepped up it's because he can't.
Recently, Jerry has consistently and deliberately deceived the media and fans when it comes to the health of Cowboy players.
The hesitance and lack of speed that you have witnessed from some Cowboys players are related to injuries that they may have "recovered" from but still impacted their physical abilities. In these cases, the player performs well, goes under the knife, and are never the same.
It's almost as if Jerry is saying that he's paying players too much for injuries to have an impact, get out there!
I think it also speaks to the coach's lack of authority. The coaches have got to notice the same thing we do. Apparently, their hands are tied until they can convince Jerry to make the right choice.
The Cowboys have a very sick management structure that threatens the success of every season.
As for LVE, it's another sad story. he wants to play so very badly, like all NFL players, that he is probably complicit in admitting to the impact of his injury and the degree to which the surgery would still allow him to play at a high level.
It's quite possible that he is going against medical advice and that the wrong hit on him could drastically affect him physically.
In any case, despite contracts, expectation, and team needs, the Cowboys should be putting the best option on the field and they are not doing that..