Expedition just started to shake

Sounds like the driveshaft may have come out due to bad universal joints.

Did you pick up the pile that felled off? This can tell you exactly what the problem is. Although I am sure the above answer is correct, the "pipe" is the driveshaft.

No, someone came along and took it out the street and drove away when I was on the phone with roadside assistance, I kind of thought it was the driveshaft but wasnt 100% sure. thank you both so much for this.