Pretty much.
Though I think he's punted basically all remaining leverage he has by doing this. If he truly wants out, so be it. But now everybody knows what's what, and the Ravens can just sit back and wait for the max offer. Doesn't even have to be this year either. I think they'd like it to be sooner rather than later, but its not like they're going to trade him for a 3rd rounder.
AND, particularly worrisome for Lamar, is not only does he have to broker a trade, without an agent mind you, but it will have likely significant limitations put on it by the Ravens (i.e. who they'll talk to and who they won't) AND he's gotta broker a long term deal with that team first, because nobody is trading for him unless they can get him to sign long term.