Stabilizer fracture rear axle ?

With my V8 I found that the right rear mounting of the Stabi ́s on the wheel bearing housing where also the spring leg with bolted is broken through. Has any of you ever had this? I changed wheels and dropped the car again and suddenly it cracked as he dived! I've never had anything like that before. Something can't be right. The left side is stuck and defies normal hammer strokes ? I ordered both of them anew. What else am I supposed to do? When the car is on the floor it hangs again / in the fracture and you see almost none of it ??? Only when you lift, you can see that.