Because Hemalurgy is of Ruin, All hemalurgic creatures posses the Flaw, which lets strong Emotional Alomancers take control of them. We Also know that Lerasium is pure Preservation, but can be used in Hemalurgy. But because Lerasium is of Preservation, I think it would block Ruins Control. So I think a Lerasium Hemalurgic Spike would steal Spiritual Platelets, (The things that heal cuts in the Skin) which Fix up the Flaw around other spikes, making them Immune to the Flaw, though they might be suseptible to Emotional Allomancy now.
Thoughts?