I've had no problems with updating the game and applying the English patch:
If you have a problem that can only be resolved by re-installing the entire game, then the cause of that problem probably isn't the English patch.
The English patch only changes a single file (lang0.pak). If you revert that file back to its un-patched form, then it's as if you never had the English patch installed in the first place. If you didn't make a back-up of this file, you can download one directly from Wasabii by clicking this button on the launcher:
If there is anyone who's game is working, but then has it break right after installing the English patch (and uninstalling the patch fixes the problem), then I'd like if you could post both your patched and unpatched lang0.pak files.