I was also surprised by the turnout at this show, especially given the crappy turnouts Empire usually has. Nekrogoblikon actually said this show was their best of the tour afterwards. I'm pretty sure one of the main reasons for the good turnout was that it was the furthest south they went, and it was their first ever east coast tour, so people made road trips for it.
I'm right there with you on Demonic Sonogram.. That was so bad, yet I couldn't turn away. And yes it all sounded piped to me too.