Looks like they got in a car accident. Here is an email I got from them.
"Sorry I didn’t get to your email before now. Three of us from the shop were involved in a 3 car wreck. Luckily no one was hurt, but one car hit us head on. We were driving the company GX470 with our bumper on it. Early on, we had a structural analysis done on the bumper. It showed that bumper was extremely structurally sound and that the Grade 10.9 bolts would be the weakest link. We can now say we have actually crashed tested our vehicle and the structural analysis was correct. A bolt sheared in the crash. The other car definitely lost the battle.
We appreciate your patience as we work through these rear bumper orders. Your order should ship in approximately 4 weeks. We will be shipping another 4 bumpers out next week. We underestimated the amount of time it takes to build these bumpers, as they are much more detailed that the front bumpers. We are trying everything humanly possible to increase the rate of shipments, including hiring additional welders & working nights & weekends. Feel free to check back anytime.
Thank you for being patient as we work very hard to get all of these rear bumpers out."