The Two Tamer (tm) method:
1.  One tamer with GDrag (henceforth #1), one tamer with Cu (#2).
2.  Upon entry, stick #1 in an out-of-the-way corner
3.  Run around with #2, triggering the statues one at a time.  Toss some minor spells at the boss to get her to waken each statue, then invis to break her aggro.
4.  Drag the statues to #1.  Feed statues to GDragon.
5.  Tank Medusa with #1, preferably after discoing her.  Use Cu Sidhe to kill Evil Dragon Duplicates.  You will have to vet, unless you are a wicked fast mage healin' tamer dude.  Or unless your name is Manwinc.
6.  Cackle over vast piles of lewt.
Only done it once, but the theory is sound.
Questions? 
