To clarify for the record, I am not saying that Raw Dog was intended to be anywhere near the degree of "casual" as "Mission From 'Arry." Merely making the point that there is not reason to assume that, just because a serious band officially releases something, the band must somehow have intended it to be up to the same standards as their most polished, produced material. There are degrees of "seriousness"/"casualness." Call it a spectrum, if you like. That's all I was trying to point out by referencing that...er...song. Sorry for not being more clear.
With respect to Raw Dog, again, I am not suggesting it is on the same level of "goofing around" as "Mission From 'Arry." But from what I remember being said about it by the band, combined with the fact that it was merely released on a video game "soundtrack" (for lack of a better term), it is fairly obvious to me that the band was far more casual about this track than their album material. As such, I can easily write it off as a casual little release that I don't judge against their other material. Yeah, it is part of the DT catalog. And, yeah, it is something I never care to listen to. And beyond that, I don't even really register it.
EDIT: And, Hef, for your edification:
https://www.youtube.com/watch?v=1Q0bGH8ScxE (the description of what is actually going on is probably more helpful (and perhaps funnier) than the actual audio)
EDIT2: This description of it by Bruce, Steve, and Nicko is actually funnier than the actual recording:
https://www.youtube.com/watch?v=lzN9JvDT0Oc