We have done it again... :)
Content Type List Binder is a new application that help us bind between lists and content types.
1. Enter the site collection url and press the load data button.
2. Select the lists you want (or need) and the relavent content type.
3. Press on bind (check the insert content type radio button to add and remove content type to remove).
You can Download Here (If you are like me and use Chrome it will save the file as .htm, so just change the suffix to .msi).