Reuben Frank is reporting that in addition to letting go defensive coordinator Sean McDermott, the Eagles have also fired defensive line coach Rory Segrest. Roob's sources tell him that Andy Reid believes the Eagles have talent on the defensive line, but they've been underachieving. Clearly the blame has fallen partly on Segrest.
Segrest was at one point the Eagles special teams coordinator, but after doing a subpar job there, he was re-assigned to the defense where he coached the line. After sub-par performance there, he's gone. After McDermott's firing, everyone on the Eagles defensive staff had to be fearing for their jobs. Surely, Andy didn't think his position coaches were all doing a great job and only McDermott was at fault for the performance of the defense.
While there was some debate over whether McDermott deserved to be canned, I doubt you'll see a lot of disagreement over Segrest.
This means the Eagles defensive staff is going to be very different come next year. Right now only Bill Shuey, whose job almost entirely relies on whether the next DC wants to keep him, and Dick Jauron are left as position coaches. Former Eagles Mike Zordich and Mike Caldwell are still around as well. Jauron could very well end up getting the defensive coordinator job in Cleveland and be gone as well.
That is called wholesale change.