diff --git a/MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/PubUtilLib/plPhysX/plSimulationMgr.cpp b/MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/PubUtilLib/plPhysX/plSimulationMgr.cpp
index 7690ab30..84665a05 100644
--- a/MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/PubUtilLib/plPhysX/plSimulationMgr.cpp
+++ b/MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/PubUtilLib/plPhysX/plSimulationMgr.cpp
@@ -319,7 +319,6 @@ void plSimulationMgr::Init()
 	if (gTheInstance->InitSimulation())
 	{
 		gTheInstance->RegisterAs(kSimulationMgr_KEY);
-		gTheInstance->GetKey()->RefObject();
 	}
 	else
 	{
@@ -336,10 +335,7 @@ void plSimulationMgr::Shutdown()
 	hsAssert(gTheInstance, "Simulation manager missing during shutdown.");
 	if (gTheInstance)
 	{
-		// UnRef to match our Ref in Init(). Unless something strange is
-		// going on, this should destroy the instance and set gTheInstance to nil.
-//		gTheInstance->GetKey()->UnRefObject();
-		gTheInstance->UnRegister();		// this will destroy the instance
+		gTheInstance->UnRegisterAs(kSimulationMgr_KEY);		// this will destroy the instance
 		gTheInstance = nil;
 	}
 }