IDGWIAT is definitely top tier material - probably should have been at LEAST on Release (or an album) rather than relegated to a B-Side. It would have elevated Release for sure and I think fits just fine with the rest of it.
If it had been on an album, then I can see why it might have been a contender as a single release as well, but given PSB's rather mediocre charting by this time, I doubt it would have been as invigorating for them as anything else.