The Eagles say no worries, it was just a bit of "lateral vibration:"
"It's an engineering issue, and it's normal in structures like that," Grant said. "I want to be sensitive to anyone that was afraid, but I also want everyone to know that it's safe. When a large number of pedestrians exit, it causes a little bit of sway."
Grant said the Eagles received similar calls after their NFC championship win over the Atlanta Falcons in January 2005 and that the Denver Broncos have reported similar incidents at Invesco Field.
Well that's good. Nobody's life was in danger on Sunday, except perhaps Terrell Owens of course.