How can I bypass Alpha UI?

So I have the UXStyle gray screen problem . I did everything and whatever with booting my pc from a usb and getting into command prompt, deleting my theme, and replacing it. So I now have to boot my pc up in safe mode to get it fixed. I have to log into my desktop user to do so. The problem is that Alpha UI gets in my way, and boots up first, takes priority. And the return to desktop button in Alpha UI doesn't work. I can't get back to my desktop. And by the way, if you're curious, if I'm not in safe mode the gray screen comes before it reaches Alpha UI. So my question is, is there SOMEWAY to disable Alpha UI from command prompt? Even deleting it at this point is ok with me. That's what I want to know. Please help me, I just want to use my alpha.