I'm not sure how far past the end of the runway the accident site is, but it doesn't look too far from the end of the runway, thus this doesn't appear to be a high speed runoff. The security camera seems fairly close to the touchdown area and thus higher speed might be expected there. Since this runoff might be a lower speed runoff, they might have had some braking during the rollout.
All subject to correction and some more facts of course.