Mind Control shouldn't affect targets above 62 level.

src: src/game/Spell.cpp

@@ -3607,6 +3607,11 @@
     if ((m_spellInfo->AttributesEx3 & SPELL_ATTR_EX3_BATTLEGROUND) &&  m_caster->GetTypeId() == TYPEID_PLAYER)
         if (!m_caster->ToPlayer()->InBattleGround())
             return SPELL_FAILED_ONLY_BATTLEGROUNDS;
+            
+    // Mind Control shouldn't affect targets above 62 level
+    if (m_spellInfo->Id == 10912)
+        if (target->getLevel() > 62 && target->GetTypeId() == TYPEID_UNIT)
+            return SPELL_FAILED_HIGHLEVEL;
 
     // do not allow spells to be cast in arenas

This is very awful hack! Fortunately i managed to fix this non-hacky way: https://bitbucket.org/oregon/oregoncore/commits/928c4fa Thanks for reporting, though

"A little hard-work never killed anyone important." - Abe

No problem man.