The Post article is misleading as none of the films in question were actually considered lost; the FIAF has always listed them as being in the Russian archive.  Roger Skarsten, on Nitrateville http://www.nitrateville.com/viewtopic.php?t=8271 listed all the American silents held by Russia.  There are a lot of standard, familiar titles and a few rarities  though  nothing much in the horror vein and certainly no LAM.
     Henry Nicolella