That's unlucky, ours came with a 2nd remote.
If only mine did - cos then I could get it out of the wife's car (which of course lives outside)
Gonna try some more brute force and ignorance - might not work but it'll make me feel better.
Bad news man, does the door open into the garage, or towards you as you open it?. Is it a a steel frame door surround or wood. Is it ona mortice or just a night latch.
1. If you have just a night latch locking the door, just drill the cylinder out of the lock, by a new cylcinder job done. Given your tools are in your garage, obvioulsy you have to borrow some.
2. If the lock has only a mortice and assuming the door frame is wooden, and the door opens away from the garage, you would potentially have to vut a section of the frame out, ideally with wood chisels, agains job done, then just splice a section of wood back into the frame. However, if the door opens into the garage which I would doubt, remove the beading and do the same as mentioned above.
Hope the above help you out mate, pity I did'nt live round the corner, would've got it open for you

Good luck