To me it's pretty simple. He has under performed since he got here. If he was only making $3,000,000 per year, he's under performed. And Knowing BB and how he looks for and expects value, it would be very surprising if DA was still here in 2015, based on his high cost combined with a lack of production.
That said, he's here now and I'd like to see him utilized for the rest of the season, in one capacity or another. Having him return kicks is a great idea and a really smart way of getting him into the flow of games, where he can produce.
Pro football is a funny yet brutal game, where injuries often come in bunches and having him on the team right now, this season, even without his expected production, has some real value. While some fans are barking at the moon over how overpaid he's been (and he has been overpaid when one looks at his production to date) it is not out of the realm of possibility that he could pull another couple of "Jets games" out of his hat before this season is done. Maybe one of these "Jets games" gets us an extra home game in the playoffs? Or home field advantage? Maybe he catches the winning TD in a playoff game? None of these scenarios is particularly far fetched.
It's a long hard season filled with unexpected twists and turns and right now he's pretty good WR insurance against injury. I'll take that!