We watched "Clash of the Titans" (the Harryhausen one) and the answer was there - some statues were completely petrified but the "fresh" ones had the cloyhing etc untouched. So I'm thinking of:
If the victim is petrified in this game the weapons etc can be recovered but a die roll is needed to remove it from a petrified hand. 1,2 stuck, 3,4 try again next go, 5,6 removed at end of turn.
Those petrified in the past have their accoutrements gradually turned to stone so again a de roll 1,2 petrified, 3,4 part pertified so usable as a club, 5,6 usable but needs to be freed from the petrified hand. 1-3 petrifed. 4-5 usable as club, 6 recoverable as above.
The film