There's also a limit to what the Vikings are really allowed to do in this case:
http://profootballtalk.nbcsports.com...g-for-a-while/...the CBA was reconfigured in 2006 specifically to prevent teams from putting players on ice for reasons unrelated to skill or health (thanks to the T.O. case in Philly)...
The Vikings are playing this the way the rules are written.