[Kolokotronis]

In great measure yes,

"+Chrysostomos loudly declares not only heretics, but also those who have communion with them, to be enemies of God." St. Theodore the Studite, Epistle of Abbot Theophilus

or

"As for all those who pretend to confess the sound Orthodox Faith, but are in communion with people who hold a different opinion, if they are forewarned and still remain stubborn, you must not only not be in communion with them, but you must not even call them brothers." St. Basil the Great

[pharmamom]

But I guess when your theology is circumstantial and based on "what makes sense based on how we feel," then we might as well all join hands and sing "Kumbayah."