Easy.
Do what a British Lord did in the House of lords some time back.
During a debate in Britain's House of Lords, one of lords insulted another and was asked to give an apology. The lord stood up and said, “I called the Right Honourable Lord a thief and a liar it is true and I am sorry for it. And the Right Honourable Lord may punctuate as he pleases.”.
But of course Joe Wilson shouldn't apologize for telling the truth, least of all on the say so of Nancy Pelosi. The more this knuckle down fight drags on in the media, the more the public will get to now the great big lies that 0bama told in his speech to the congress.
Sure, he could play word games the way British MP’s do. But Wilson could be looking at a back-bench role for the rest of his career plus no election support and possibly a primary challenge if he gets too “uppity”(that seems to be a popular word right now).
The House Republicans have some backbone but I can’t see them tolerating a true rebel in their midst.