Sheehan, well-known for his lack of energy and heterodoxy, is "retiring" as pastor of St. Paul's in Cambridge and has worked out a sweetheart deal to be parochial vicar of Our Lady Help of Christian's in Newton. The booby prize on his twenty year sojourn of sucking up to Chancery officials in his quest to become a Bishop.
Sheehan, was a figurehead in the "Boston Priest's Forum", which you'll remember organized with the help of Richard McBrien to make the word priest interchangeable with pedophile, so they could overthrow a regime they felt was a threat to "Vatican II". McBrien advised them to organize along with them, a group of laity to overthrow the Cardinal and put in it's place Jack Connors, the heterodox "Sisters of St. Joseph", Sister Janet Eisner, Peter Lynch, Brian Hehir, Peter Meade, David Castaldi, etc., and put the formation of future lay Catholics and priests into their hands.
They have been quite successful,since this is precisely the plan of Sean O'Malley.
The lay group is now defunct as they have achieved their goals in Boston and, as all are working hand in hand with the Archdiocese in every parish and the Chancery buffoons, there is no time, energy or need.
Sheehan was expecting to be rewarded with an elevation. O'Malley submitted his name and it was rejected by the Vatican. In spite of whatever kind of institution O'Malley is trying to replace the Catholic Church with in Boston, real Shepherds of Christ's Church have stepped forward in the public square. In Sheehan's depression over it, summoning the energy to get off the couch to say Mass for an hour several times a week is just too much. He'd prefer to hole himself up where it all began and pine away for what should have been.