LAWRENCE - A controversial offshoot of the Catholic religion is planning to hold its worship services in the vacant Sacred Heart Church. The Willing Shepherds of Jesus Christ, whose members adhere to pre-Vatican II teachings and rituals, has signed a 15-year lease for the church at 321 S. Broadway. The order, which lists an address in Tewksbury on its Web site, celebrates Mass in Latin with the priest facing the altar instead of the congregation during services. The order is renting the Gothic-style church and its adjacent rectory from ETC Development Corp. of Boston, which bought the two-acre property last...