Try this... you need to add an extra '%' to the token
Code:
rtmpdump -r "rtmp://31.220.2.148/redirect/" -a "redirect/" -f "WIN 17,0,0,134" -W "http://p.jwpcdn.com/6/12/jwplayer.flash.swf" -p "http://yotv.co/embedo.php?live=espn2&vw=620&vh=490" -y "espn2" -o "espn2.flv" -T "%%Zrey(nKa@#Z"