Typical post here. The OP explains that he is a professional hauler who had a failure that appears to be related to a defective coupler, and may be a defect as it has happened to two other drivers recently. Which, predictably, is then followed by lots of amateurs telling him that it is impossible. Oddly enough, someone posts the recall info. indicating that it is not only possible, but happening to (shockingly) Lippert. Same sheet, different day.
Gdetrailer, funny you should mention the chipper accident. My son is a safety engineer who worked for that chipper manufacturer at a factory service and rental facility in Pittsburgh. They are brutal when it comes to who leaves the yard with a chipper and how it's hitched. Doesn't matter if you are a supervisor for one of their best accounts, or a weekend homeowner, if you don't have a tow vehicle that can do the job, and the trailer isn't hooked up 110% correct, you aren't leaving the gate. In our area, one of the big regional tree clearing and power line ROW outfits just spent months clearing lines. They spent the day in front of the house and I noticed that reattaching the chipper was a two man job. One guy hooked it up and checked the lights. Once he got in the truck, the driver hopped out and double checked everything.