When destroying an item in a model that has an animation running as part of its delegate then it can cause a crash to occur

When destroying an item in a model that has an animation running as part of its delegate then it can cause a crash to occur. This is because the animation appears to still be running and the connecting objects to it are no longer valid but are still referened by the animation. In the attached example, press any key repeatedly and within about 20 seconds or so then it will crash.