If a Wild Magic Sorcerer were to multiclass into a level 2 Wizard of Evocation, and a fireball were to occur on a surge, would they be able to exempt themselves and 3 of their friends from the effect?
Argument for: A smart sorcerer would know what's happening, and his knowledge of Evocation magic would allow him to control the effect, if only slightly.
Argument against: Regardless of the sorcerer's skill, the surge of power from his veins is too wild to even shape, not just contain.
As far as I know, the errata doesn't cover this quandary by any means except for a mention of applying metamagic to a wild surge (you can't). Would this be a question for each DM to answer themselves or a question that has a definitive answer for all?