Well Neelix comes across as petty in a lot of ways. He is literally shown stalking Kes in Parturition for example, so one more example of his jealous streak is hardly new.
Twisted though, the whole episode just.... doesn't make sense so small things like the rest of the crew apparently just twiddling their thumbs is really the icing on the crap cake. Heck, that Mortimer guy from Good Sheppard... I could definitely see him just saying... "Oh great they flew into -another- anomaly... well I'm just going to stay here and hope they don't get me killed.. if I'm lucky they'll die and I'll live."