I think they are saying that Al Jazeera HAS the video, but has not shown it. Al-J seems to have realized that all these executions of Westerners are not endearing their beloved "militants" to the west.
From what I am reading it does appear that Maupin has been killed. The Army has seen a video of a blindfolded man who "looks like him" being shot in the head in a darkened room. No confirmation, but...doesn't look good.
Prayers for his family in their darkest hours.
I'm still praying Maupin is still alive. What I can't understand is how these terrorists get our military guys. None of them should be alone ever and if some creeps approach them, shoot first and ask questions later.