Charles Robinson the Yahoo reporter said on Jim Rome today that the collusion case is why Kaep isn't signed.
First it was not the protest it was just that he isn't good enough to be a backup, then Seattle brought him in for a tryout in hopes of avoiding a collusion suit where they said he was too good to be a backup, then it was his girlfriend sent a tweet that hurt Ray Lewis and the Ravens owner's feelings, then it was he needs to do an interview and say he still wants to play and now it's the collusion suit scaring owners away.
If that's true then an owner would sign him as a backup on a bad team just so they can use that against him in court as proof he was not banned secretly.