While traveling thru Little Rock,Ark on the Interstate many years (mid 90s) ago I saw a Dodge Pickup do this. It was very, very violent. I will never forget it. LOL
I had a Ram 2500 and had it happen to me once. It is quite appropriately named. The truck had under 40K miles on it, I'd replaced the garbage Track bar design with a hemijoint setup and still has stock 265/75r16 tires when it happened. The only other suspension mod was skyjacker D25 coils as a "leveling kit". Bilstein 5100s in place at the time.
Still had the DW. But it was just that one time, triggered by a particular bump I hit at an underpass on the west side of Cheyenne. It was brutal but it never happened again other than that once time.
There's a lot of debate about what DW really is, but it's essentially a low-frequency, high-amplitude oscillating resonance in the suspension. Real DW is just a coil spring thing-- 5 link front ends are notorious for it. Thus the 2nd gen Ram trucks (1994-2002) and several Jeep generations are infamous for getting it. Somehow the Single-radius arm front suspension used by Ford seemed far more resistant to it than the dual arm design Chrysler was using.
There's no one cause of death wobble. It's a system-level phenomenon. It doesn't automatically mean you have bad ball joints or not enough caster or bad tie rod ends or a worn track bar or whatever. But any one of those can be the item that puts you over the edge and go from not having DW to having DW.
Really high end racing shocks all but cure DW in almost all cases because they have hugely different damping curves between compression and rebound. You need that especially on a truck designed for carrying things, since it will be vastly over-sprung and under-damped in rebound when its empty.
The rebound on my old Ram was so violent that an impact that wasn't even strong enough to compress the front end to near the bump stops was plenty enough to launch driver and occupants out of the seats and into the roof when the essentially-undamped rebound would occur. If not for seatbelts, serious neck or head injury was a possibility.