Possible to have 2+ user controlled teams in dynasty?

Subject says it all. Doesn't seem like it out of the box, but I was wondering if some DBF or DAT editing would change that?

You can change the ISHUMAN field in teams.dbf in a Dynasty. That would be the only way of changing it though, the ability to control multiple teams in Dynasty Mode is no longer an option (as it was in Franchise Mode up until 2003).