Thanks for that. I got it back on. Although what a horrible design. This gutter (my pic in original post) is held onto the track via 2 short "drywall" screws. I say drywall because they are super coarse thread and super brittle- just like a drywall screw. These screws pinch the gutter in place via a slot. The passenger side screw snapped off with the smallest amount of torque (I was using a Phillips bit held in place with my left fingers through the tilted up glass and using a 1/4" open end wrench with my right fingers- fingers only!). And the driver side just wanted to squirt it out and not punch it down.
So I ran a zip-tye through each and secured it that way. A little cheesy but it works now.
And I discovered that the passenger rear corner of the glass- the deal is toast. I could see daylight through it! Guess I'll replace that sometime.
But the sunroof drains appear to work.