Since everyone is entitled to an opinion, I'll just state that mine is that he couldn't have possibly have done it on purpose -he'd have to be too stupid. He was very lucky he didn't get hit by the player, penalized, or suspended, and he must have realized those were all likely outcomes if he had thought about it beforehand.
Also, doing it on purpose would have been a real challenge. He'd have to practice for months. If you watch the PFT fan video, he was in the middle of the white stripe with his back to the play (watching on the jumbotron, which makes sense, as it's a much better view) before the ball was even fielded. He couldn't have possibly known the play was going to end 60 yards downfield right where we was walking, so he'd need to practice every return for every game waiting for his chance. Also, if he'd known what he was doing he would have been very tense knowing Jones was approaching fast with a collision a real possibility, especially since he knew where Jones was, but he couldn't know his own exact position as he was looking up the whole time. The tension would have shown in his face and as he tried to jump out of the way -unless he has professional acting training, which I doubt he does.
All in all, it's possible he could have done it on purpose, but I doubt he has the skillset, stupidity and dedication to pull it off.