I read that article as he preached a sermon containing the truth, and now he is stepping down from the inaugural festivites to avoid the truth becoming inconvient for him and/or the president.
Do you really believe that Louie Giglio is compromising the truth by withdrawing from the inauguration? I don't for a minute.
It is clear from their subsequent comments that the inaugural committee was going to "disinvite" Giglio had he not withdrawn, and he could only participate at the pleasure of the President. It would have been futile to try to force himself into a place where he was no longer wanted, and prevailing would have only guaranteed angry demonstrations against him that would have detracted from the event in which he was participating. Giglio chose not to make a bad situation worse, and had the grace to simply decline the earlier invitation.
The more important work of his calling - to preach and teach the unvarnished Gospel of Christ - goes on...