A couple of years ago Mark Driscoll was reported saying he thought the five points of Calvinism was garbage.
This puzzled former Mars Hill media head Justin Dean who nevertheless commented (rightly, as we'll see) that he didn't think Mark Driscoll had (or would) actually change his core views.
That Driscoll was not a strictly Reformed type on the limits of the atonement goes back to his 2008 Doctrine series where he advocated for what he called "Limited Unlimited atonement", which has historically been identified within the Reformed traditions as Amyraldianism. Driscoll has lately been restating his views on soteriology and atonement in Duck, Duck, Doom (as distinct from his preferred nomenclature in the Mars Hill years of "duck, duck, damn".