if you see his emoji on your phone it could be too late but there may be hope yet!
pocket-lint.com has a fix out already
Pocket-Lint explains, ‘Launch Safari on your phone
Go to vincedes3.com/save.html
This will bring up a dialogue box saying “Open this page in Messages”
Click “Open” and it will place the message in your Messages app
Delete the malicious text thread and the Vincedes text too.’
hope that helps : )