Sonata NF (2006-10) :: 2007 - Front Passenger Power Window Not Working

The front passenger window on my 2007 Sonata has always been sluggish. Recently it broke (I heard something snap) when I tried to roll it down on a cold day. I decided I want to take a shot at fixing it myself before bringing it in to the mechanic. I've made some progress but I'm having trouble removing the inner door panel where the window regulator mechanism is.

The window can be pushed down or pulled up by hand fairly easily, but there's enough resistance (for now) to hold it in place and keep it from just dropping down into the door.

I removed the main door panel without any problems. The window regulator cables and mechanism are behind a second panel that I'm having trouble removing and I can see through the holes in the inner panel that the window is still attached to the two "lifters".

I haven't been able to find a lot of detailed instructions for this step. I've been following the steps outlined in some this youtube video [URL] ...., but there seems to be something I'm missing when I try to get the panel off.

I have freed the black adhesive around the edge of the panel, and I've removed all the main bolts on the inside of the door, the 3 bolts at the door latch, detached the inner door handle and removed the outer door handle, but I still can't get much movement in the panel to free it. I'm hesitant to tug or pry the panel too hard because I don't want to bend the metal at all and ruin the fit with the door.

Is there any trick to loosening the panel so that it comes out and I can get behind it? Do I need to slide or rotate it, or is it held by any clips similar to the ones that held the main door panel? Most of the resistance seems to be coming from the area to the right of the speaker (between the speaker and where the inside handle to close the door would be). I can try to provide more details if necessary.