My brother and I actually found a way around this. He didn't want all the free stuff, and I did.
1) Start on the profile who wants the free gear. Download everything you want.
2) Go into your game file. Get all the stuff. Save.
3) Quit, and switch to the other profile.
4) Delete the Cross Edge game installation file (NOT either save file).
5) Reinstall game.
6) Load the second file.
The first profile now has all the DLC and the second profile does not.
Didn't test if redownloading the files would have any affect on the first file (heh heh heh, that would be awesome if it did).
Now, for you, if you saved after collecting the DLC, you're probably out of luck. Throw out the items. I imagine if you start a new file, you'll regain all the DLC bonuses, so you might want to delete your install data for next time.
ps. Game sucks either way, but OP is better than UP if you still feel like toughing it out.