Bah you are nit-picking, he was Lord Protector and upheld the ban. He was in charge and Christmas was banned.

Officially, the ban on Christmas would be enforced throughout the rest of the reign of Charles I, and into the Protectorate and the Commonwealth. On more than one occasion, soldiers would patrol towns and cities, confiscating food and drink which was believed to be prepared for Christmas. But from here on, public celebrations of Christmas were usually suppressed by the authorities, but behind closed doors Christmas would continue to be celebrated. With the restoration of the Stuarts in 1660, followed the restoration of Christmas in England and Wales.