Ding ding ding ding ding! We have the correct answer!!! The second I read that suggestion, it clicked in my mind that this would explain why the door only opened a 1/2 inch. That's about the size of the tolerance of the door latch. Who the heck knows who locked the door or when, but the door WAS locked. I called home and it was confirmed.
Seriously, so many moronic things are happening at home lately. Every day I come home to some new and wierd event. this is just the icing on top.
We're going to call a pro to fix the top door panel, and check to make sure the safety features of the opener are operational. I feel like those 2 things are out of my league.
thanks for your input......
This same thing happened to me and I unfortunately don't know who did it.
Left my house today at 10:40AM. Closed the garage door with the automatic opener.
Came home from a doctor's appointment at 12:40PM, tried to open the garage door and it opens 1 inch or so and stops and closes again.
I come inside to look and I see the door was manually locked by someone as the top panel and the locks are all bent out of shape like the OP describes.
Unfortunately I don't know if someone did this or what but it just seems like a lot of bad luck.
I also have a Clopay Door.
OP - If you find this wasn't an accident and that somehow Clopay Doors can manually lock themselves, please let me know.
It is going to cost between 500-800 for me to get it fixed. More if I insulate the garage, and get an insulated door (for the tax credit, and to keep the bedroom on top warmer). Thanks.