A calm Philly fan?
Anyways, there are multiple ways to play the Cover 2. I have no idea how Philly runs it. I do not know if Cover 2 was called on that play. (I suspect none of the fans ripping Hobbs do either.) But Hobbs was playing classic Cover 2 technique there.
Most often, the corner has flats and run force, and his job is to play outside in. Consequently he abandons routes that head into the hashes — those are either picked up by the linebacker short or the safety long. The corner is responsible for the flats or possibly a secondary route — like a wheel route — that develops wide and deep off the primary route, since the safety will need to cover the primary. Additional deep inside routes are supposed to be followed by the linebacker.
If the receiver tries to release to the sideline, he is supposed to deny the sideline with a jam, sink with him to about 10-12 yards, then look for crossing routes and running back routes. The jam should allow the safety to get to the deep sideline with the receiver.
The receiver that beat Hobbs either ran a seam route into space or ran an uncovered flag. Under classic Cover 2 rules, Hobbs succeeded. He shoved the receiver's outside shoulder, then jumped off the route and looked for shallow routes as he got width. Hobbs would be wrong if (a) the Eagles weren't running a Cover 2 or (b) the Eagles run a corner-force Cover 2 that is abnormal. However, it's more likely the deep safety bit on something.
I'd sure like to see a full-field replay of that.