Yes, CHUP is sort of correct if you can define what is "fairly easy" is.

The the rubber boot is held down by four plastic punch in pins at the VERY Far corners of the boot.
You will have to get at the heads of them by lifting up the carpet easily and try not to tear a corner.
A bent forked tool is more helpful than just a tip of a screwdriver but use what you can.

From what I see in the video, that ring you are pulling up on is not spring loaded first of all. Completely disconnected.
This means that that ring is no longer engaged inside the column to a lifting shaft or something called that.
That black ring is pinned to the shaft with a tiny split roll pin.
As I remember you might be able to see it from the outside (?) maybe from the console side though?

On the bottom of the fore mentioned shaft, is a screw sticking out the rides against a "lock out plate." It keeps the shift lever from rotating over the shift rod in to the reverse gate slot in the top of the transmission.
That screw head gets lifted over the top to ride on top of the lock out plate and holds the ring and shaft up against spring pressure.

It's like CHUP says, it might be easy if the problem you remove the stick itself and see what's going on.

This can be done by removing a snap retaining ring from down in the bottom of a recess below it.
Only problem ( the hardest part) is the stick is holding on to the transmission shift rod. The is a pin through it and an Allen Head set screw holding that pin, (here goes) that is only accessible from under the car.
Once that is removed the stick will lift completely out from the bracket the retaining clips comes from.

My thinking it is the tiny roll pin, about 1.5 to 2 mm in diameter, has broken and you will have to replace it.

Hope this helps you decide that this is NOT a "mission impossible!"
(:-)

Phil