When I read the original post I thought that the goal was to disable all VPN tunnels. One easy way to do that would be to remove the crypto map from the outbound interface. And you could restart the VPN tunnels by configuring the crypto map back onto the outbound interface.
But if I understand the follow up post correctly, then TK has several tunnels and wants to disable only one of them (leaving the other tunnels working). I am not aware of a way to do that directly. One approach that I would suggest would be to change the configuration of the ISAKMP key for that particular peer to a different (incorrect) value and then to clear the crypto session for that peer. This would result in that one tunnel not coming up. And to restrart the tunnel you would configure the correct ISAKMP key for that peer.
The original request was to be able to disable the tunnel with no config changes. I am not aware of a way to do that. And this involves only changing one (pretty simple) config parameter.
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