I'm not sure what you guys are saying is entirely accurate. From what I've been told 2 or 3 times by our commanders when we captured a spawn against an enemy:
The person who's spawn got captured keeps the remaining troops (tickets), but loses all their money and equipment. They are still in the same spot on the strategus map, but they have no money or equipment, only troop tickets.
If you kill the enemy's troops down to 0, then they lose all troops (of course), they lose all equipment, and they lose all money. And then what you guys are saying is accurate, that they randomly spawn somewhere on the map.