Upper Ball Joint came out while driving

ohhhhhh nooooooooo yup as others has said they are screw in and take a special socket you can also use a pipe wrench to change them out but they'll chew it all to hell sounds like new control arms and ball joint in your future and if you took it to a mechanic to do this id get him to replace all of that at his cost!!! or atleast him get you new parts and you take it to a mopar mechanic i wouldnt weld them either
scary,.............just plain scary!
Terry