Didn't tell us, but it was very likely Barkley or perhaps Tyler Wilson. Barkley's GF is from Seattle and he was going to Seahawks games in 2011 because he really liked our team and badly wanted to be a part of it with PC. Had he come out in 2012, he probably would have. Sucks for him. I really like Barkley, but we seriously owe him one for going back to USC that last year given how things turned out since then, obviously.
We were never told Upshaw was the guy, but had three sources that all indicated Seattle had significant interest, so we put 2 + 2 together and ran with it. It was shortly after our last contact that Bruce Irvin started racing up everyone's draft board. Since it happened late, we didn't hear a peep about it. It is also possible the FO caught on to who the snitch was (since he helped us in 2010 and 2011) and used him to spread bad info (that he thought was good info). I don't think that's what happened, but I'm open to the possibility. Our FO is full of crafty bastards, and from what I understand they are aware of Rob's blog, so it's definitely possible.