While that's true, at the time they were getting a deal set with Bradford, they had no idea they'd be moving up to #2 for Wentz. This is definitely a case of having your cake and eating it too, because once they knew they were going to close on the #2 pick they had to be face-palming about the Bradford deal.
In the end, they tried to cover all their bases and were unbelievably successful in doing so, and now find themselves in a bind with too many QBs.
The big issue is that no one else who needs a QB believes Bradford is worth very much. The Jets could snag Fitz for less money. They are essentially the same QB, though Fitz is older. The 9ers already have two mediocre QBs, so why trade for a 3rd? And the Broncos 1, surely don't want to be seen as taking all the Eagles' 7-9 QB castoffs; and 2, don't have the fundage for Bradford either.
That doesn't really leave anywhere else for him to land. And while Eagles-GAF will tell us that he played great in the 2nd half, that's like saying "my career .230 hitter batted .275 over part of the season; he's gone from mediocre to amazing!" Nobody... other than Pep and YH ... believe that Bradford has it in him to continue playing really good football consistently over 16 games.
Nobody believes that.
He's going to wind up as a backup somewhere, for a lot less money.