Kevin Sheedy wants Paul Roos' criticism of GWS plastered throughout their changerooms, saying it should act as a soldering iron to their backsides.

GWS are in a slump and Roos, the 2005 Sydney premiership coach, criticised the Giants after their round 17 loss to the Swans.

That prompted an angry reaction from Giants chief executive David Matthews.

Roos fired back at Matthews over the weekend and now Sheedy has joined in the harbour city rivalry.