I don't believe there is a way to disable a currency at this time. You can use the Show To Usergroups setting to limit it to staff members with the "can see hidden credits" usergroup permission, though.
but what if I have multiple currencies I don't want this one running at this time. even If I hide it people would still be earning points. How can I prevent that?
How do I at least hide the specific currency that I don't want showing from postbit? I have 2 currency I want to hide one from postbit. thanks need help earlier the better.
You can use the usergroup permissions for being able to see restricted currencies combined with the "specified usergroups only" setting in the currency editor