Sorry for the confusion there is nothing wrong with that site here. You can't even use Find my iPhone on a jailbroken phone so I don't understand what you mean. I'll opt out, good luck...
Why can't you just turn it off then? Or do you want to fake a location? You only said "What cydia or other app can I obtain that will also work for icloud's findmyiphone?", so it is not clear sorry.
OK you only said you tried the one...
I have not idea about that .