Sorry for the late response. But no... Just no.
1. Zachary Orr was far and away the most overrated defensive player on the team last year. I know that everyone here loved him, but as @-Truth- and @BmoreBird22 pointed out, Orr got a ton of those tackles because Mosely ate the blockers and allowed Orr to run free. Orr was a decent ILB, but my god was maybe the most undeserving all pro I've ever seen. If there's on thing that pisses me off more than the Jernigan trade, it's the fans who say that CJ Mosely is "just another guy", and Orr had a better season. Nope. When Orr was thrusted into the #1 ILB spot because of CJ's injury, he struggled mightily. There's no surprise why. CJ made the defense work. He's our biggest asset going forward and there's no question about it. He's gonna be a Raven for life.
2. There is no way in hell we would have gotten anything less than a fourth rounder from Jernigan comp pick wise. Even with his inconsistencies, a player with his talent would easily command $6.5 million on the open market. Which btw, given that our cap situation is significantly better next season, we could have easily afforded to keep him. That obviously wasn't in our plans(which is foolish and I'll explain why in the next point), but the return absolutely SUCKED. If we had traded him outright for that Eagles third rounder and not given up our own pick, you would hear 0 complaints from me and I'm a huge Jernigan fan. In my eyes, that'd be a solid trade.
3. Sorry. But we picked the wrong guy. Timmy Jernigan was an inconsistent pass rusher, but was a consistently excellent run defender who fit the defense well and was young. I'd rather have a guy who is very inconsistent as a pass rusher like Jernigan, but when he's hot he turns it on, then a guy who only plays 80% of the snaps. Given that the nfl has evolved into more of a passing league, Jernigan's ability to play three downs makes him, at least in my eyes, a more valuable commodity. I know he flat out dissapeared at times, but it's not like he was getting any help either. If we had more of a pass rush, I think we would have seen more pressures and sacks from the man. He's not an all pro, he's not even a pro bowler. But finding a defensive lineman who can rush the passer at a decent level is harder than most people think. And we just traded away our proven/best guy. For pennies on the dollar.
4. Finally, the returns are idiotic. Timmy Jernigan playing next to two very good pass rusher is probably gonna have a season where he gets 6-8, possibly 10 sacks. The Eagles would probably be inclined to sign him again afterwards, for a sizeable contract but one that'd be well deserved, and they suddenly have one of the better defensive tackle tandems in the league, and they basically gave up nothing to get him. I don't give a damn if he is inconsistent, trading up 20 spots and giving away your best pass rusher, even if he is a locker room problem, is a HORRIBLE return. It literally makes no sense from a logical standpoint. The Eagles paid pennies for a dude who as a total package is an above average player, and they move down and still get to keep a pick in the round. I can personally guarentee you that Timmy, especially as a proven commodity thus far, is going to be better than at least 90% of the players drafted in the third round this year.
I could go on and on about why this trade was totally and utterly idiotic, but honestly, it's post 4/20 in the state of Colorado. I'm going to bed lol