Once the gwiffons are back he is in for problems. Jillian was able to beat a dwagon one on one. GB can not affford to lose units, they are vastly outnumbered, and that is the beauty of this ruse. The next day he will use his intel to get the best way home (send most dwagons on a direct route while each warlord will take a full stack to destroy targets of opportunity.
Of course, that is if everything goes according to plan. I can't wait to see the teddy bears have it.