With the electrical connector released, work the top of the door panel out of the clips along the top at the window slot. This took me way longer than it should have and I'm sure that there was something I eventually did which was the "trick".
I tried angling the door at about a 45 angle and carefully pushed upward but that did not release the clips. Don't force the panel upwards/outwards too hard but there is a certain position (that I can't exactly recall...sorry!) that will allow the clips to more easily release with light upward / outward force.
At this point you may want to use one of your knees to press the bottom portion of the 'almost free' door panel up against the door frame for the next step. This will keep the door panel from dangling by the two cables.