Oh I know that the teams that may be interested in him are going to study the film. They are going to know well before he arrives at the facility whether or not they think he's someone that can help them. What I also know is that even if they think he got a raw deal in Dallas and he was open every play, they are not going to talk about that in the negotiation process. They are going to say, "well, you had 47 catches for 610 yards and 3 TD's last year, here's what other receivers your age with those stats are getting on the market, we feel this is a fair price."
Now, you may be right in that the Twitter stuff is best avoided because that can be a turn off as well, but I don't think the social media stuff matters as much as your stats when it comes to contract time, unless it is over the top belligerent towards teammates or coaching. Which this really wasn't. He basically said, that playcall sucked, but we all sucked and need to pull it together.