Thats right what a way to start the commute to the job this morning. Long story short, I left my the receiver I needed at a job over the weekend but found another one I could use but I didnt have a hitch pin for it. No prob my pops lives right the street I'll steal one from him for the day. Stop in chat for a min, he grabs me a brand new pin, I'm looking at it and the design looks sketchy, never seen a pin like this one, Ill post pics of the pin when I find one on line. Throw the pin on, hook up trailer and were off. Got 20 mins of highway time from east to west side and its always chaos, tons of traffic Im sure you all have your rush hour to. Cruisin along at about 45-50 traffic all around me I'm in the right lane. Intuition is getting the best of me and I feel like something is wrong and I keep thinking about that stupid pin its got me nervous. I check my rear view mirror for about the 500th time in 10 mins just as feel a jarring pull and see my trailer swing to the left, I knew right away that the trailer came off and as if that wasnt serious enough I knew it was bad because the way it swung I was pretty sure at least on of my safety chains broke. I slowed quick but with traffic I didnt lock em up. After I slowed the trailer violently swung left at which point I did lock the brakes. I managed pin the trailer between my truck and guard rail, both chains had snapped, the trailer was about 3/4 up parralel to my truck. Severe truck damage, cant open the passenger side door, window wont go up. No one died or got hurt, zero damage to trailer aside from needing new chains which Ill be doubling up on for the future. What happened was honestly best case scenario, this could have ended very badly, truck rollover, runaway trailer on the hwy at rush surely would have killed someone. I will def get pics of this pin to warn others and I will be calling the manufacturer as they should be recalled. I also feel like they should carry the responsibilty of the truck repair but thats prob a dead end. Careful out there!