I am most comfortable with control being defined thus:
- control of a hex is gained by having a good-order or DIS combat unit enter the hex when no enemy combat units are present
- in order to take control of a hex from the enemy, you must drive the enemy combat unit(s) from the hex (if any are present) AND you must have at least one good-order or DIS combat unit in the hex
- if Player A assaults a hex controlled and occupied by Player B, and during the assault all of Player B's combat units become demoralized, Player B has lost control of the hex but Player A has not yet gained control. The hex status is "contested".
Vince, you are a proven rules maven. I politely invite you to try and find corner-cases or gray areas in the above.
Those guidelines work in my mind, conflict however they may with the RaW.