It's sad to see you here :(
Please, revoke 3T access on Trello!!!
please, follow these steps:
Step 1 - Open settings
Go to Trello website
and open settings.
To open settings, click settings menu item (number 1 on the screenshot below):
Step 2 - Applications section
Scroll down to the "Applications" section (number 2 on the screenshot below):
Step 3 - 3T Application section
Find the "3T Application" section (number 3 on the screenshot below):
Step 4 - Revoke
Click the "Revoke" button (number 4 on the screenshot below):
Now your Trello account is completely disconnected from 3T Application and 3T will have no
access to your Trello account anymore.
If you will return back to 3T you will find everything as you left it here before you disconnected (Unless you have deleted your 3T account).