GrindArea Mob Avoidance Problem

Not sure who is responsible for this tag, but the "AvoidMobs" element does not appear to work. While farming this area, it consistently runs right through Dalvag's Final Flame, causing my toon to be killed.

Code:

		<GrindArea name="Garlean_Area_1">
			<Hotspots>
				<Hotspot Radius="250" XYZ="-204.1779, 73.05789, -144.1113" name="Garlean Stuff" />
				<Hotspot Radius="250" XYZ="-193.9883, 78.87093, -223.697" name="Garlean Stuff" />
				<Hotspot Radius="250" XYZ="-201.232, 82.59113, -291.6395" name="Garlean Stuff" />
				<Hotspot Radius="250" XYZ="-263.1522, 84.56665, -275.6183" name="Garlean Stuff" />
				<Hotspot Radius="250" XYZ="-270.522, 83.92373, -186.8876" name="Garlean Stuff" />
				<Hotspot Radius="250" XYZ="-246.5598, 78.51331, -156.3168" name="Garlean Stuff" />
			</Hotspots>
			<AvoidMobs>
				<AvoidMob Id="59" /> <!-- 3rd Cohort Eques -->
				<AvoidMob Id="58" /> <!-- 3rd Cohort Laquearius -->
				<AvoidMob Id="60" /> <!-- 3rd Cohort Secutor -->
				<AvoidMob Id="61" /> <!-- 3rd Cohort Signifer -->
				<AvoidMob Id="647" /> <!-- Gorgimera -->
				<AvoidMob Id="2944" /> <!-- Dalvag's Final Flame -->
			</AvoidMobs>
			<TargetMobs>
				<TargetMob Id="269" /> <!-- Magitek Vanguard -->
			</TargetMobs>
			<MinLevel>50</MinLevel>
			<MaxLevel>61</MaxLevel>
		</GrindArea>

So if the purpose of "AvoidMobs" is NOT to keep the toon safely away from the specified mobs while grinding, then please explain to me what it is for.

Thanks.