Yesterday I was running a Standard gauge 380 engine with several passenger cars and the engine hit a small plastic passenger platform that had moved close to the track. I figured the engine would push it away, which it did, until the platform hit the track. The pilot went up on the platform which acted as a ramp, lifting up the front in the air. This caused the engine to roll and fall off the layout. Fell about 33" to a carpeted floor, landed on the nose. The pilot took the hit and bent to heavy metal frame down. That is the only damage I can see. It happened so fast I couldn't react fast enough. I didn't like the platform anyhow so it is gone and I have a repair job. AS far as I can tell nothing else is damaged. Tough old bird.
I feel your pain; I have come close to collisions with furniture (living room carpet layout) due to the swing of the front end on curve track; DOH!