How can I keep players from taking the armor from armor stands
Solution 1:
To stop players breaking them, make the ArmorStand invulnerable:
/entitydata @e[type=ArmorStand,r=5] {Invulnerable:1b}
To prevent players from taking the items on the ArmorStand, use the DisabledSlots tag:
/entitydata @e[type=ArmorStand,r=5] {DisabledSlots:2039583}