I have used Linesman pliers. Open them up so the outside of the pliers lock against the pins on the spear. Hold the keg between your legs and twist. You may need a cheater bar (a pipe, vice grips, etc..) for the tough ones. This method could save your spear and gasket some damage and prevent an expensive and painful screwdriver extraction from your (insert body part here).
Last edited by Jephro; 01-21-2009 at 01:58 PM.
Jeff Byrne (aka jephro)
11 year pro craft brewer available for hire...
Puyallup, Wa - for now