So, right from the start, you notice this is a Bell episode. I think another comment talked about this. With the happy exception of "Goldberg Variation", all of his episodes are bellow average or just average (Rain King). Scully is a good example: she has very bizarre lines and behaviour. I think it makes total sense that she became open minded not only because of all she saw, but because this is what makes the possibility of Mulder being alive a very real one. So I buy that. But how she goes about it is just... odd. It feels almost silly.
I didn't mind much the T2 reference, this metal going nuts can belong in the X-files universe, if done well. But I fear RP's character here is made less likeable than necessary, his emotional range goes from angry to concerned to angry again during a good chunk of the season.
Also, I notice that most episodes that turn out on the crappy side are episodes with bad guest stars; not that they are bad actors and actresses, but bad characters. You don't feel anything, you don't care, which is terrible. Do they live? Get arrested? Die? I can barely remember five seconds after this episode is done. It suffices to compare it with the great "Redrum", where you are with Martin till the end, hoping he didn't kill his wife (although the moral lesson was unnecessary). Lastly, there isn't much here to advance anything in terms of plot or personal relationship between Scully and Doggett. One of the weakest episodes of the show so far.