Why were Kolb and Bradley on the field?

Among the many questions we're asking about the Philadelphia Eagles this morning, there's one that should stand apart from the rest. Why did the Eagles put quarterback Kevin Kolb and linebacker Stewart Bradley back on the field if there was even a remote chance they were suffering nfl throwback jerseys
from concussions?
Phil Sheridan of the Inquirer wrote his column about this very topic, and he makes some excellent points:
"I don't have an M.D., and I didn't have the Indianapolis Colts jersey
chance to examine either player," writes Sheridan. "The bottom line, though, is that Kolb and Bradley were both deemed unable to return to the game by the very same medical staff that cleared them a few minutes earlier. That certainly suggests they should have been kept out of the game entirely. Given the timing -- late in the second quarter -- it would have been simple enough to hold them out until halftime."
And given the fact that Brian Westbrook had two concussions in a relatively short period of time last season, coach Andy Reid has become an expert on concussion protocol. I watched Bradley staggering around after he collided with teammate Ernie Sims and assumed there was no way he'd return. But he was back out there for a Packers touchdown drive.
On a day when the Eagles made a mess of Dallas Cowboys jersey
things, this may be the hardest to clean up.