There's no need for hacking. The new 6.1 release has the ability to re-order, or even hide, the buttons however you want in a few different ways:
* The SCLogin module has a "Providers" option in the 'Social Button Settings' section. In there, you can list the buttons you want to show, and the order of them, for that instance of the SCLogin module. For instance, on this site, we have that set to:
facebook,google,linkedin,twitter,instagram,github,vk
The last 3 are less important, so they go on the 2nd row of our login popup.
* If you're using the {JFBCLogin} tag, you can similarly update that with the providers setting:
{JFBCLogin providers=facebook,google,linkedin,twitter,instagram,github,vk}
Finally, for your username, there isn't a way to hide it. However, we can update it for you. If you have a preferred username you'd like to use, let me know either here or by the Contact Us form, and we'll get it changed for you.
I hope that all helps, but if not, let me know!
Thanks,
Alex