Sunroof stuck in tilt position?

I would try to spray wd40 on the sunroof slides first, then here is the bounce back override procedure.

Bounce-Back Override

To override a bounce-back condition (to overcome the resistance of ice on the roof opening panel seal for example), within 2 seconds of a bounce-back event, pull and hold the Slide or Tilt control switch. The closing force begins to increase each time the roof opening panel is closed for the first 3 closing cycles (bounce-back is still enabled).

If that doesn't work, then we must disable the unit to see what broke. Here is how to disable the sunroof and how to remove the headliner to get at it. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem.