Whats wrong with my car?

i have a 2003 ford taurus, 6 Cly, 3.0 HOV with 144,000 miles on it. i recently had some front end work done (tie rods and penger side axle). after the front end work was done my car drove PERFECT except pulling a little because i needed an alignment, of course. i took it in to get the alignment and they said the axle was either bad, the wrong size or the joint in it was bad. they said they tightened it up for me until i could get it back to who did the work and the went ahead with the alignment. well, i go to pick it up and as soon as i got on the interstate driving home, every time i would get up to 60mph the traction control would kick in or when i would turn "too much" to the left. i took it back to the person who did the front end work and they said the axle was fine, and checked everything that has to do with the front end, tightened everything up if needed and went through everything with a fine tooth comb. i got my car back last night and on the way to work this morning it drove like it did after all the work was done before the alignment (minus the pulling). except now when i hit 65mph the TC kicks in again and sometimes when i hit a pothole or a bump (even if not too hard) it sounds like something is loose underneath on the penger side like its going to fall off. i dont know whats going on and if its dangerous to be driving.