I've disassembled these lots of times, and it's fairly easy once you get used to the method. I trust you've already snapped the top cover of the lower half in place. Then you can reach the ribbon cable to the connector while the keyboard is facedown, so it's not in your way. The big problems happen when one or both of the plastic tabs on the connector clamp either pop out or break, preventing a secure hold of the cable in place.