Jesus says that it is easier for our world to disappear than for anything to change in Moses and the Prophets. Actually, Colossians 2:16-17 only defines the parameters of Messianic Judaism. Colossians 2:16-17 is not a statement of freedom from any forbiddance in Moses.
Sabbaths is plural in the Greek of Colossians 2:16-17 for the other 7 sabbaths of the works of the Torah (Law), not in singular form which would indicate the 7th day sabbath. The singular form 'sabbath' in the verse exposes the biases of the translators.