On NFSMW U, how can i get autolog on two nintendo ID accounts? ERROR 193

[HShadic65]

Hi, im really in need of getting autolog on two different nintendo ID's, because i have a little brother that wants to play online on HIS account. Everytime im on his account and i connect to autolog, it says im already signed into another account, which is mine. If you cant get autolog on two ID'S, then how do you switch autolog to another ID? I've tried deleting my save data, stayed up ALL night trying to figure it out. So please respond ASAP.