i don't think they used a spear to nail anyone to anything, i think they used a hammer.
this spear, even with the added fleece skin and gold bits, doesn't seem to have a lot to do with a typical roman spear. of course, with the number of fake relics that popped up around the time this spear got interesting, i am not surprised if there are several copies available in various secret collections here and there.
i bet if i make one i could still use it for world domination, provided all my doomsday devices are strategically placed and working properly. i'm still trying to get the uplink working to my moon detonator.