Chuck Colson didn't lie to Ron Sider. Sider, in spite of his left-leaning redistributionist beliefs, is still an evangelical believer who understands homosexual behavior to be immoral. He is misguided but not evil. Those who would impose homosexual marriage on the US are evil. They have goals that go beyond their stated motivation of "equal rights for gays." They wish to destroy any influence evangelical Christianity has in the US. It is THEY who are lying to the well-meaning-but-misguided Ron Siders within Christianity.
I myself would be consumed with shame and indignation if I were to be perpetually judged by some of the the ignorant rubbish I expounded on in the 1970's.
Sider has admitted his mistakes and learned from his critics since then. We should be more just in our judgments: let's give him credit for allowing himself to be changed by accurate criticism. It's a virtue all of us would do well to acquire.