It's very simple, we just get TM to announce that since the EU will not agree to accept us on second rate terms, we have decided to stay and dominate them from the inside and quash the very idea of them forming a United States of Europe!the only way to cancel brexit is for Vince Cable to become PM.
It's not likely though.
Serves them right! I can just see the headlines in the SUN
"Europe capitulates to our threat of leaving as it misses our leadership and clear Superiority.
We have decided to put out best interests aside to save Europe once again from itself
Europe will become part of a GUK
"Greater United Kingdom"
And they will all have to do what we tell them
So there!