Bit late again, just back from "up north". As Punkfolkrocker implies. Strings won't just "pull the bridge off" most guitars - possibly it could on a Lowden and certain others - purely because, on a bridge with pins, the strings aren't attached to the bridge but the bridge plate beneath it. The strings exert a downward pressure on the bridge (some rotational force) and an upwards pressure on the bridge-plate. If the plate gives way, you'll get a gaping hole in the top.