According to NFL.com, Marvin has asked to be released from the Colts. While it is hard for me to tell a player not to go out and look for all the money he thinks he deserves, I think Marvin might be making a mistake here. The Colts have been very generous with Marvin over the years (evidenced by the fact that Marvin's cap hit this year will be the most among WRs). Next man up.
http://blogs.nfl.com/2009/02/22/harrison-asks-colts-to-release-him/