Bro I really like you so it's hard for me to say this. I'm 100% sure that you didn't confirm the email you changed it to. If you did then it would show two registered emails on the password reset page:
http://gyazo.com/8e7221affd2885a8b7fa05c2a537bfb5
The first one was the OG email which was my email and the second one is yours. There was no other owners of that Twitter account except for you and me so the only suspicious activity that would show up is the fact that you didn't confirm the new email. -______________-
Like I have no idea what you were thinking when you tried swapping it...