Failed to Login: bad login

Long story shortened. It happens when someone trys to login as me some were else.

Bit longer story. Me and a few friends were playing on a Cracked Minecraft server. One of them Uses Nodus, Nodus has a way were you can change the offline name to whatever. They changed it to my username (zachman1221) and loged into the same server that we were all on. Ever since then I can not join ANY premium checking server even my own. I then asked that friend to close his minecraft thinking hmm, i think mojang thinks this account is a hacker blah so it can not be used to join ANY premium server. Im not sure if that is the fact or not. But after my friend did close complety out of minecraft and reloged in and i reloged in I was fine. But that ass did it again. and know i cant join any server again. Is there anyway this can be fixed on your end were that ip can not be associated with my account in anyway?

P.s. I have many times closed Minecraft and relog in. Also doing force updates etc.

Thanks for your time.