Well, my descriptive vocabulary for tastes/smells is not that good. It is definitely not light-struck. I put a series of one of my pale ales in different colors of bottles in the sun to learn about this taste (surprisingly, green bottles protected the beer less that clear bottles, but brown bottles definitely provided protection, though not without some damage to the beer). But you're right, noble hop aromas are similar to light struck aromas to me.
I opened one last night (now only two weeks in the bottle) and the smell is gone to be replaced with strong yeasty smell. So you're right, I was quick to blame the Cascade.