Thanks for posting, @JBP, you triggered a learning experience for me.
It looks like you are stuck with Spot Remover for now, called three times, one for each boy, and animated with Keyframes.
I was hoping I could do it with either Mask: Simple Shape or Mask: From File, animated with Keyframes, but the first has no “Invert” and the second has no Size/Position animation.
If Mask: Simple Shape had an Invert checkbox, I would have used an animated alpha ellipse to reveal either a Gaussian blurred identical clip, or something more colorful like a fireworks video in the place of each face.
And if wishes were horses…