Call it what you will, but I think it would be silly not to take a car still under full factory warranty to the dealership to have it looked at. Even if they dont find anything it will still offer you the advantage of having someone who knows the vehicle take a look over everything.
Furthermore, the notion that a strut is blown is reaching for an explanation of the car riding like s*** and that would be your most unlikely reason.
And I to am glad that I do not work at your dealer IPL370, because you are probably that guy who comes in and knows everything and gets mad when I would tell you what is really wrong with your car.