Will Trump keep his promise on social security?

This article quotes Trump saying during the campaign that "I will do everything within my power not to touch Social Security, to leave it the way it is; to make this country rich again.” And “we will not cut Medicare or Social Security benefits, but protect them both.” So why then did he appoint two members to his social security transition team who are hostile to social security and want to privatize it? It seems inconsistent with Trump's promise to protect the program. So what will he do when (not if) the GOP Congress votes to gut it and/or privatize it? Does anyone out there really think he'll stick to his word?