John,
Please don't think that I was saying you are wrong. It may very well be the case with the baron, but with my experience in the aircraft, and my experience spinning aircraft, I don't understand how it could spin inverted from a standard stall entry. The aircraft will enter an inverted attitude, during the first turn of the spin, which, I guess could be interpreted as an inverted spin, if the aircraft is recovered prior to completion of the first turn. Mind you though, I have never spun a baron, (and don't intend to), so I wouldn't know. I would be interested in any texts or references yourself, or anyone would have as to the spin characteristics of the baron, or twins in general.