First step is to remove the foam around the Oculus.

Foam is glued on a plastic frame that is clipped on the main box. You need to remove foam and plastic frame together.

There is no complexity in removing this part. As far as I can tell, it is not even clipped. It's just laid inside the box.

First picture shows the part once removed

Second picture is the delimitation of this part on the box

Third picture show how the cable is running under the foam. Which means removing the foam doesn't affect the cable.