Time for a bagectomy

Now I'm beginning to wonder to myself; "Self, why didn't I didn't pull the dust bag off before now?" You can see that the bag is pressed into an elbow which is retained by a groove in the casting. This entire assembly lifted right off.

I wonder if there will still be some air movement through this or if this will whistle like blowing over a pop bottle? (That's right, I said "Pop". I'm from Ohio.)