Disconnecting 4 exhaust oxygen sensors on Sable.?

I have a 1998 24V DOHC V-6 sable and I have to remove the catalytic converter Y-pipe so I can replace the speed sensor. I broke loose all necessary bolts for the Y-pipe but now I need to disconnect the 4 exhaust oxygen sensors.I can see the plugs for the sensors but I can not get to them to unplug, the wiring is to short at both ends. If I could get enough slack I could disconnect them.I know there is a tool to take out the sensors put I guess you would have to unplug first.Any help would be appreciated. Thanks.