Deleting Objects in Engine (C++)

I have sort of 2 questions both related. First:

Currently I have an associated SimObject for one of my classes. The dtor for my class currently looks like this:

MyClass::~MyClass()
{
	if(mMyPtr != NULL)
	{
		mMyPtr->unregisterObject();
		delete mMyPtr;
	}
}

Just in case it matters I have a method I opened to script to call when I want to create the associated object and it looks like this:

void MyClass::iniPtr()
{
	if(mMyPtr == NULL)
	{
		//Create a name for the object (Ptr_<ObjName>)
		String name("Ptr_");
		name += getName();

		//Create the object
		mMyPtr = new MyClass2();
		mMyPtr ->registerObject(name.c_str());
	}
}

Now that all appears to work (haven't had any issues thus far), but I need to implement a system to remove the MyClass object after a period of time if it's position hasn't been set after a certain period of time. Which brings me to the second part of the question. I set up a variable that holds the last time, in the MyClass ctor I set it to 0, then in set transform I have:

void MyClass::setTransform(const MatrixF& mat)
{
   Parent::setTransform(mat);

   //We got another position so update our time so we don't remove this object
   mLastPATime = Platform::getVirtualMilliseconds();
}

This is all standard timer stuff, but then in processTick I have:

void MyClass::processTick(const Move *move)
{
	Parent::processTick(move);

	//Check if this object should be removed
	if(mLastPATime != 0)
	{
		U32 timePassed = Platform::getVirtualMilliseconds() - mLastPATime;
		if(timePassed >= 2000)
		{
			//delete this in some way
			return;
		}
	}
}

Now I wasn't quite sure the correct way to have it delete it's itself. I found deleteObject(); and safeDeleteObject(); and then there is the unregisterObject(); I am assuming that deleteObject is the correct call (all safeDeleteObject appears to do is the same thing only schedules it to be a bit later), but I am not quite sure though what the correct way is though. So I figured i would post and ask, also it made me second guess what I was doing in the first part of the question when removing mMyPtr (although I should probably follow if it isn't broken don't fix it).