Mort needs to go all the way on this mea culpa.
He should, but he never will. Mortensen didn't make up the "2 PSI under" story, he was just a pawn used to get the story out to a wide audience. As an NFL Insider at ESPN, he was well suited for that role.
When he found out that he had been used to spread a lie as part of smear campaign, he could have blown the whistle on his sources. Instead, we've learned that Mortensen is fine being a pawn as long as he still has his access and his "insider" status. The fallout of his actions isn't his concern. He mentions how, in the old days, he would taken a few more days to work on the story, but there was a rush to get it out there. He never explains why there was a rush in this case, the same way he never asked why the NFL wanted to plant a false story.
The last paragraph in that story shows me Mortensen will never get it:
Every once in a while someone will tweet something about '11 of 12.,’” he said. “And I want to tweet back, 'No matter what, it was still 11 out of 12.’"
No it wasn't, you dummy! There were only 11 footballs to measure. Blount had thrown one into the crowd. "11 out 12" implies 12 footballs were measured, 11 of them were below the minimum PSI and the 12th was fine. That wasn't the case, just like they weren't 2 PSI under the limit, either. The line Mortensen was fed, the thing he is now most known for, was false. That's a story he should write about, but it might cause his NFL sources to dry up, so it's easier to pretend it was true.