These brackets that keep the cabled mess down and attached to the frame are adhered to the cabling

Remove these brackets from the flex cabling mess

TIP: Be mindful of how the brackets are positioned in relation to the cables and frame. Take pictures to reference. Without these brackets, the cables will be free inside the frame (which is not good).

There are also little wraps of plastic holding different parts of the cabling together. Go ahead and CAREFULLY remove these as we won't need them during reassembly and we do need them removed to completely remove the touchbar

Follow this guide to properly install the new touchbar