Yes...I really really hope he knows what he's doing...
An american I met in Almaty recently, thought he could fly into Tashkent and get a visa in the airport...He finished up spending three days and nights in solitary, before being kicked onto a plane out of uzbekistan.
Not to allarm you, but in your place I'd be careful.
This guy eventually got a visa, without any problems, in the uzbek consulate in Almaty, (although the LOI was mandatory and he had to pay about 3 times more than I did) .
I think a trip to an uzbek consulate in TM might be worth a try...just my opinion.
Saluti da Trieste,