From what I read in your post, it sounds like you want to point a domain name to a subdomain under your hosting plan. From what I know, unless you have the reseller plan you can't. Read under this forum here.
Our hosting is made for ONE domain name, although another can be parked on top of the original one, but both will resolve the same index page.
What you are trying to do, and have done, is to host sbmgl.com with us, and then register another name, noob-ownage.tk, and have it pointed to a subdomain on your main site (sbmgl.com/noob).
This is a violation of the TOS and AUP, and can cause your account to be suspended, or terminated.
You CANNOT host multiple domain names, pointed to subdomins on your main account.
In your example, it is being redirected to a non-tch hosting plan not a subdomain and the above is tch's policy.