This sounds a lot like the personal loyalty vows to Hitler demanded of German officers before and during WWII. Many hated the man...but because they had vowed to defend him, fought on.
More big reasons why lay leadership is needed to put the apostate bishops out of business. See Lay Episcopalians for the Anglican Communion : http://www.layepiscopal.org/
The bishes are indeed running ECUSA like a mob enterprise.
Now is the time for all believing Christians to get the Hell (and I use that advisedly) out of ECUSA. What are you waiting around for?
Bp. Mathes is entirely within his authority as bishop to ask for these things -- that's what "Episcopal" is all about, after all.
Then again, no bishop should ever need to resort to exercising that authority within a normally-functioning diocese. To have to resort to widespread threats and force is to admit failure -- which is even worse when the threat is made against long-established orthodoxy.
Even if we quite reasonably assume that some of these parishes and rectors are hard to work with, it's quite clear that Mathes has failed.