Remove a proxy setting via ssh or ARD?

Question

Is it possible to delete a proxy config from the command line? I have looked at scutil, networksetup, ifconfig, ipconfig, systemsetup and scselet command, some of which will SHOW me a proxy config which is helpful, but I need to remove the proxy settings altogether.
Im going to be removing our proxy server this year (no more proxy), and will need to remove all proxy settings from all my Mac systems. Id like to script it somehow, or at least be able to do it remotely via ssh or ARD.

Answer 1

I dont think it works in Leopard. For example, when I type the related command:
"sudo networksetup -getwebproxy Ethernet"
I get the following answer:
Enabled: No
Server:
Port: 0
Authenticated Proxy Enabled: 0
(even though the proxy is configured and working and can be tested. Thus, networksetup doesnt have a clue about the proxy server configs in the Network system prefs pane.)
The "scutil --proxy" command does show me my current proxy configurations (similar to what the Network pres pane shows), but the command doesnt allow me to disable or delete them. Example:
<dictionary> {
ExceptionsList : <array> {
0 : *.local
1 : 169.254/16
ProxyAutoConfigURLString : http://wpad/proxy.pac
FTPPassive : 1
ProxyAutoConfigEnable : 1
HTTPEnable : 0
(I get the same response regardless if I type
"networksetup -setwebproxystate "Ethernet" off"
or
"networksetup -setwebproxystate "Ethernet" on"