You can shim the brake rotor to straighten it. I doubt you caused it to warp, probably came like that, you maybe just now noticed it. You can take it off and put it on something flat to check. I bet it's straight.
I have noticed on several DB30's the sprocket and brake rotor hubs are machined to straighten, because the wheels usually wobble. Looks like they were put on a lathe. The wheels/ tires wobble, but the sprocket/ brake rotor run true or better anyway.
However, I bought a used DB30 with a brake rotor that had a very noticeable wobble. I used a alum coke can to make some shims, just little rectangular pieces that fit between the rotor hub and the rotor, and between the retaining screws.
Worked out really well, but would be a hassle if I ever have to take off the rotor (would have to align it again, took awhile).