I do think the comment had something about how it was written that made it hard to follow. I understood the first sentence. But then I got to

> Having this tableau unexpectedly unfold right in front of my eyes

And the metaphor / tense shift caught me by surprise and made my eyes retrace to the beginning. I still got it, but there was a little bit of comprehension whiplash as I hit that bump in the road.

In some ways, we're treated to an experience like the author's as we hit that sentence, so in that sense it's clever writing. On the other hand, maybe too clever for a casual web forum instead of, say, a letter.