In theory you might be able do a Transit Without Visa (TWOV) if departing again within 24 hours and you do not leave the transit area. However double check all this as although there is information about this on the
SVO site, they don't mention it on the
DME site. There might be more up to date experience on the Russia forum of FT:
http://www.flyertalk.com/forum/russia-485/