There was a thing called fraternal correction which clerics were to exercise toward one another.  Needless to say, hardly practiced. Were Tobin to enjoin it toward Myers in at least one area, Myers' conspicuous consumption of his billion dollar mansion, the so-called reform of Francis might have teeth. Tobin could order Myers to cease and desist in the use of this diocesan subsidized property. Canon law does provide for retiring bishops by requiring living quarters.  Rather than moving into any of a YUGE number of empty rectories, no need for Myers' bling manse. Retired bishop of NH had a condo lined up (even though he owned house on ocean) when new bishop withdraw financially subsidizing it. Retired bishop got quarters instead in cathedral rectory.
I suspect Tobin will be just a jovial jolly good fellow like his neighbor, Dolan.
"The more things change, the more they remain the same."