On the other hand, I thought the rules specified that removing a side from a skirmish counts as a win for the remaning side. By this definition, if one side wins, the other loses, so, removing a side from a skirmish makes that side lose, there and then.
Assuming the same applies, it could be argued that, since one minion was removed from the skirmish, THAT minion lost the skirmish, and that would trigger
New Errand imediatly.
However, it could also be argued that, since you skirmish all enemies as an "entity" of sorts, combining strength and damage bonuses, I think removing A minion from that side should not even mean that minion lost the skirmish, it was just killed by an ability, BEFORE the skirmish ever occured, resulting in a net "loss" of power from the "entity" the character was skirmishing.