I don't think it was anything like PTG at all. The first didn't try and present evil as a tangible supernatural thing, it presented it as a very human thing, something we are all capable of. They went out of their way in the Lochley story to make it supernatural and beyond the norm, and I don't buy that in the B5 universe. There has never been anything in the B5 universe that has been presented where I said, "man, this just doesn't fit." But, the idea of demons inhabiting bodies and trying to get into outer space really felt like it didn't fit to me. Even if that isn't the case, just the whole idea of that being viewed as a possibility didn't fit with me.
I think the dialogue, the acting, and the message all combined to be far too preachy. Instead of subtly layering the story or presenting a religious viewpoint in a subdued way we were clubbed over the head with it for 40 minutes and it came across as far too preachy for my liking. Even when we would have a Minbari-centric episode where there religious beliefs were the core, there was always an opposing viewpoint and the Minbari's beliefs were presented in a subtle, subdued way. That was not the case in this episode as every character from the beginning was heavy handed with the way in which they presented this idea of demons and evil.