Just wondering our loud, but would it be possible to place the bike in bond as a customs port in Thailand? That way technically the bike has left the Kingdom. I had to do this with some surfboards years ago when I was going to Bali via Don Muang but wanted to stop in Thailand for a few days, but not import the boards into Thailand as they were destined for Indonesia. Of course, surfboards and motorcycles aren't the same thing, and in my case the boards just stayed "in bond" at Don Muang until I collected them when I left. Only had to pay a small storage fee to the in bond warehouse.