I'm an idiot by entering an incorrect permanent rewrite rule, what do I do? [closed]

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http://serverfault.com – Working overly tired caused me to use the wrong web.config file in my application, therefore applying a permanent redirect on the wrong URL!! I was meant to convert: http://www.mydomain.net to https://mydomain.net but, I did this instead (notice .co.uk): http://www.mydomain.net to https://mydomain.co.uk Our .co.uk domain isn't used anymore but we still own it. I managed to delete the rule pretty quickly from the config file, as luckily it's in development stages and nobody would have landed on it anyway, and I also deleted the rule from IIS too. However, my browser still gets redirecte (HowTos)