An interposer is the name for an interface that links one electrical connection to another. In this repair, it is the board connecting the battery to logic board.
Lift the Interposer off the logic board and remove it.
Removing this board will ensure that the battery remains disconnected throughout your repair, preventing your computer from accidentally powering on. It's also a good idea to take it out so it doesn't fall out unexpectedly.
Open the MacBook Pro approximately 110 degrees, and place it sideways on the table, as shown.
While holding the display and upper case together with your left hand, remove the remaining T8 Torx screw from the upper display bracket.
Be sure to hold the display and upper case together with your left hand. Failure to do so may cause the freed display/upper case to fall, potentially damaging each component.
Remove the last remaining T8 Torx screw securing the display to the upper case.