How to get rid of my profile on multiple consoles?

Hey fellow Xbox'ers, I come with a question that I kind of need help with soon.

My friend who is not really my friend anymore (we've had issues) is starting to use my account... for the worse, and I am deeply afraid he may get my account suspended, or banned. You see, I went over to his house one day and I downloaded my Xbox profile
onto his console. I didn't think anything bad would happen since this was a long time ago and we were still good buddies. Anyways, I never set a password on the sign-in page for my profile, so anyone who used that console could get right into my account. Unfortunately,
that's what has happened.

My old friend is now trying to find ways to sabotage me, and he has by using my Xbox account. I have told him to delete it from the console, but he refuses. So I am wondering, is there a way I can set a password to my Xbox profile on that console from my
console, or am I going to have to march into his house (which he is refusing me to do) and fight my way to delete my account myself? I just really need to get my profile off of that console, because I don't want to get in trouble for something that I did not
do. If you know the answer, you're amazing, and I give you the greatest gratitude. Thanks in advance.

:)

 

Help

How do I get rid of "Hi John" at the bottom of my screen.? It has my profile picture next to it.

 

My Profile changed..how do I change it back?

I logged on to my profile from my friend's house, but instead of coming up as
[Mod Removed] with all of my info and achievements, it came up with a weird blank profile called mewkitty something or other. Has anybody else experianced this? How do I get my old profile back? How do I get rid of the new one?

 

If you want him to not know your password man please do this here:
live.xbox.com/.../Protection

And then go here to change the password:
account.live.com/summarypage.aspx

to change your password though you do need to verify yourself, you must click on Security & Password.

 

To add on to what TripplE said , Once you change the password , it should make him only able to play your account offline , which has no repercussions. Hope you get this sorted out , man.