As they should.
Honestly, been watching it over and over again, and really hard to tell what happened. First I thought it looked like he was shoved, and then tripped maybe intentionally or unintentionally (back to the play just like Tomlin; and I'm one of the few who thought Tomlin was clearly unintentional, but still deserving of penalty), but after watching it a bunch of times I think it's also possible that Lane slipped on the yard marker.
Anybody know where a more HD video of this is, or even better, a different angle? Has Lane said anything about what he thinks happened?
I'm going off this:
http://sports.yahoo.com/blogs/nfl-shutd ... --nfl.html
If it can be determined to be an intentional trip or shove, , the NFL needs to take that really seriously.