I saw a similar incident in Michigan. Big snow comes up suddenly, work lets out early. Someone with a new four-wheel drive vehicle becomes impatient waiting for clogged traffic to clear, and decides to go over a berm. Wasn't all that high of a berm. Vehicle sat there for three weeks. Kind as of a reminder to all.
People forget that all- and four-wheel _drive_ don't necessarily mean all- and four-wheel _stop_. Especially when you're asking a tire to exceed it's grip level with a sudden braking input.
This seems to be an extension of what my family called "the Jeep principle". A jeep, and now a GPS, enables you to get stuck further from help.