Regular DQ rules apply for the battlers; MrL gets nothing, Arcanite gets whatever he would have gotten had the match finished (standard counters for all his mons plus whatever KOC he got). You get whatever you get according to the standard subreffing and DQ rules; unfortunately I'm not too sure how these work so you're probably better off asking Dogfish/Engineer/someone that refs a lot. You can claim your UC normally in the regular Prize Claim thread, the battlers will have to wait and see if their teams win or lose and claim accordingly.