In Windows, you could use netsh wlan commands to add and remove wireless networks. I think you would need to use netsh wlan export to grab the wireless profile from a computer that has the connection, then you could import that profile with BigFix.
There’s also an option to remove wireless profiles. If just importing a profile with a changed password wouldn’t update it, you could remove it and re-add it.
More info here: http://www.windowscentral.com/how-manage-wireless-networks-using-command-prompt-windows-10
It says Windows 10, but I’m pretty sure the commands haven’t changed since at least Windows 7.