New Experience Orbs not disappearing

Hello all! -

I've been working on creating a new experience called "XM."  The problem is that once you "pick it up (collide with it)," it doesn't go away, but instead keeps floating by your head.

I use LivingDeathEvent to spawn in the XM.

It seems like the "setDead()" function is not working...Any idea why this is happening?

EntityXMOrb.java

package twixthehero.ingress.entity;

import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;

import twixthehero.ingress.Ingress;
import cpw.mods.fml.common.network.PacketDispatcher;
import cpw.mods.fml.common.network.Player;
import net.minecraft.entity.item.EntityXPOrb;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.nbt.NBTBase;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.nbt.NBTTagInt;
import net.minecraft.network.packet.Packet250CustomPayload;
import net.minecraft.world.World;

public class EntityXMOrb extends EntityXPOrb
{
public EntityXMOrb(World world, double x, double y, double z, int value)
{
	super(world, x, y, z, value);
}

@Override
public void onCollideWithPlayer(EntityPlayer player)
{
	if (!this.worldObj.isRemote)
        {
            if (this.field_70532_c == 0 && player.xpCooldown == 0)
            {
                player.xpCooldown = 2;
                this.playSound("random.orb", 0.1F, 0.5F * ((this.rand.nextFloat() - this.rand.nextFloat()) * 0.7F + 1.8F));
                player.onItemPickup(this, 1);
                updatePlayer(player);
                informPlayer(player);
                
                this.setDead();
            }
        }
}

private void updatePlayer(EntityPlayer player)
{
	NBTTagCompound tag = player.getEntityData();
	NBTBase modeTag = tag.getTag("XM");
	int currentXM = ((NBTTagInt)modeTag).data;
	tag.setInteger("XM", currentXM + this.getXpValue());
}

private void informPlayer(EntityPlayer player)
{
	ByteArrayOutputStream os = new ByteArrayOutputStream(;
	DataOutputStream dos = new DataOutputStream(os);

	try
	{
		dos.writeInt(Ingress.XM_PICKUP_PACKET);
		dos.writeInt(this.getXpValue());
	}
	catch (IOException e)
	{
		e.printStackTrace();
	}

	Packet250CustomPayload packet = new Packet250CustomPayload();
	packet.channel = "IngressXM";
	packet.data = os.toByteArray();
	packet.length = os.size();

	PacketDispatcher.sendPacketToPlayer(packet, (Player)player);
}
}

IngressEventHandler.java

package twixthehero.ingress;

import twixthehero.ingress.entity.EntityXMOrb;
import net.minecraft.entity.Entity;
import net.minecraftforge.event.EventPriority;
import net.minecraftforge.event.ForgeSubscribe;
import net.minecraftforge.event.entity.living.LivingDeathEvent;

public class IngressEventHandler
{
@ForgeSubscribe(priority=EventPriority.HIGH)
public void entityUpdate(LivingDeathEvent event)
{
	Entity e = event.entity;
	int i = 125;

	while (i > 0)
	{
		int j = EntityXMOrb.getXPSplit(i);
		i -= j;
		e.worldObj.spawnEntityInWorld(new EntityXMOrb(e.worldObj, e.posX, e.posY, e.posZ, j));
	}
}
}