I recently heard from a Dominican friar that the Master General of the Order of Preachers (Dominicans) had restricted the use of the traditional Dominican liturgy. Is this restriction contrary to the wishes of Pope Benedict and his directives for the traditional liturgy in Summorum Pontificum?
No. In Summorum Pontificum, Pope Benedict made this provision for celebration of traditional Roman liturgies by religious orders:
Communities of institutes of consecrated life and of societies of apostolic life, of either pontifical or diocesan right, wishing to celebrate Mass in accordance with the edition of the Roman Missal promulgated in 1962, for conventual or “community” celebration in their oratories, may do so. If an individual community or an entire institute or society wishes to undertake such celebrations often, habitually, or permanently, the decision must be taken by the Superiors Major, in accordance with the law and following their own specific decrees and statutes (SP 3).
While we might wish for a more generous celebration of the traditional Dominican liturgy, the Dominican Master General is within his authority to restrict its use.