Fixes multibrain weirdness

code/modules/mob/living/carbon/brain/brain_item.dm

@@ -67,7 +67,7 @@
 
 		if(borer)
 			borer.detatch() //Should remove borer if the brain is removed - RR
-		if(owner.mind)//don't transfer if the owner does not have a mind.
+		if(owner.mind && !non_primary)//don't transfer if the owner does not have a mind.
 			B.transfer_identity(user)
 
 	if(istype(owner,/mob/living/carbon/human))
@@ -94,7 +94,7 @@
 				brainmob.mind.transfer_to(target)
 			else
 				target.key = brainmob.key
-	..()
+	..(target, special = special, dont_remove_slot = brain_already_exists)
 
 /obj/item/organ/internal/brain/prepare_eat()
 	return // Too important to eat.

code/modules/surgery/organs/organ_external.dm

@@ -105,7 +105,7 @@
 						O.status |= ORGAN_CUT_AWAY
 						if(!O.sterile)
 							spread_germs_to_organ(O,user) // This wouldn't be any cleaner than the actual surgery
-						O.forceMove(src)
+						O.forceMove(get_turf(src))
 					if(!(user.l_hand && user.r_hand))
 						user.put_in_hands(removing)
 					user.visible_message("<span class='danger'><b>[user]</b> extracts [removing] from [src] with [W]!")
@@ -892,13 +892,13 @@ Note that amputating the affected organ does in fact remove the infection from t
 	// Attached organs also fly off.
 	if(!ignore_children)
 		for(var/obj/item/organ/external/O in children)
-			O.remove()
+			O.remove(victim)
 			if(O)
 				O.forceMove(src)
 
 	// Grab all the internal giblets too.
 	for(var/obj/item/organ/internal/organ in internal_organs)
-		organ.remove()
+		organ.remove(victim)
 		organ.forceMove(src)
 
 	release_restraints(victim)

code/modules/surgery/organs/organ_internal.dm

@@ -9,19 +9,23 @@
 	var/slot
 	vital = 0
 	var/organ_action_name = null
+	var/non_primary = 0
 
 /obj/item/organ/internal/New(var/mob/living/carbon/holder)
 	if(istype(holder))
 		insert(holder)
 	..()
 
-/obj/item/organ/internal/proc/insert(mob/living/carbon/M, special = 0)
+/obj/item/organ/internal/proc/insert(mob/living/carbon/M, special = 0, var/dont_remove_slot = 0)
 	if(!iscarbon(M) || owner == M)
 		return
 
 	var/obj/item/organ/internal/replaced = M.get_organ_slot(slot)
 	if(replaced)
-		replaced.remove(M, special = 1)
+		if(dont_remove_slot)
+			non_primary = 1
+		else
+			replaced.remove(M, special = 1)
 
 	owner = M