Rear catch jammed on inside

[Jack TGA]

Any bright ideas on how to open the garage when one of the catches is jammed from the inside and consequently won't turn?
I'm going to try accelerating and breaking to see if I can dislodge whatever is blocking it. Failing that I suppose I have to unscrew the beds.

 

[Spriddler]

I'm going to try accelerating and breaking

That seems a bit extreme. Have you checked to make sure you can get a replacement if it does break?

 

[jockaneezer]

I had that when something had fallen over in the garage and was squashed against the lock, luckily I could get access by going under the bed. Can you wedge one side open and poke the catch internally with something ?

 

[Jack TGA]

I unscrewed all the bedroom and got in that way.