sorry to hear your situation. I had a similar jam when my rear blew on me. are you serious your in a 3rd world country? if there's no dealers or anyway whatsoever to get access to a key, i would try looking for this only if all else fails. yup, its a bottom bracket tool for bikes, now i don't know if you can find it in a 16mm, but worth a shot if your really stuck in a bind.
http://www.martynashfieldcycles.co.u...79_2847768.jpg

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2011 X5 35d 123,000 miles sport space gray/oyster

2005 X5 3.0i sport package Style 211
157,500 miles

2005 Chevy Avalanche Z66 BFG T/A Offroads