Tlist & Garbage collection question

Supposing I have two objects - one that is a base type for my game objects which has a pointer to the game..

Type Tmob
Field class,x,y
Field game:Tgame
Field img:Timage
Field destroyed=False

Method update()
	''do stuff with game
EndMethod

Method draw()
	DrawImage(img,x,y)
EndMethod

Method destroy()
	destroyed=True
EndMethod
EndType

and the game which extends Tlist and serves as a collection.

Type Tgame Extends TList
Method play()
	For Local m:Tmob = EachIn Self
		If m.destroyed
			Remove(m)
		Else
			m.update()
			m.draw()
		EndIf
	Next
EndMethod

Method make(class,x,y)
	Local m:Tmob = New Tmob
	m.class=class
	m.x=x
	m.y=y
	m.game=Self
	AddFirst(m)
EndMethod
EndType

When a mob is destroyed and removed from the list will it stick around in memory because it has a link to game or will the garbage collection get rid of it? If it does stick around can I solve this by setting game to nulll or somehow destroying the pointer?

The mob will be freed when it's removed from the list because there is nothing pointing to it. Its fields won't keep itself alive.