There's always a better way...how much time do you have ;-)
If you do not like the results, you can run DI on a duplicate (e.g., press Command+Option+Shift+E / Ctrl+Alt+Shift+E to stamp all to a new layer), and then just add a layer mask and paint with 50% gray and a soft brush over the faces (this will reduce rather than eliminate the effect). You could also potentially automate some of that by masking to the red channel, or even to skin tones themselves (you might look at Blend Mask).
The key, I think, to all of Photoshop is evaluation. You want to look at your image and figure out what you want to do...and then how. The answers need to make sense based on your knowledge of tools and the properties of images. Be aware that every action has a reaction: you can't darken the highlights without them appearing...darker. That is, the area of the cheek may end up not looking natural if you don't handle the toning down well...
Does that help at all?