Toshi, if you don't drop, snag, spill, step on, or have chewed on a model thats a work in process, then your not enjoying the full experience of scale modeling.
EVERY one of my builds ends up a partial rebuild because of my butter fingers. I'm captain Klutz of the modeling world. And whats funny, I build sailing ships, which is why it takes me three years to complete the rigging. There is nothing like the feeling of spending 30 hours setting all the rigging on a mast and then catching a spar with a shirt sleave and ripping it all into a tangled ball of thread and plastic. The most common experience I have is knocking a fully rigged bowsprit off a sailing ship with either an arm or when moving it. I'll try to post a picture sometime of my CSS Alabama with the top main mast sheard off when I was taking it out of the case. Oh what fun!
The first feeling is to throw the model in the trash and walk away, never to see it again. The best thing is to do the latter and just walk away from the project for a little while. Let the dust settle a bit, then go back and start fixing the damage. Its all part of the hobby.
Keep up the good work Toshi! Scott