Cardinal Burke speaks of "heresy" and a how a pope would places himself in "schism"

http://www.catholicworldreport.com/Item/5292/cardinal_burke_no_i_am_not_saying_that_pope_francis_is_in_heresy.aspx

CWR: Bishop Athanasius Schneider, O.R.C., the Auxiliary Bishop of the Archdiocese of Saint Mary in Astana, Kazakhstan and titular bishop of Celerina, who has written an open letter of support for the four cardinals and their dubia, has also said that the Church is in a de facto schism. Do you agree with that?
 Cardinal Burke: There is a very serious division in the Church which has to be mended because it has to do with, as I said before, fundamental dogmatic and moral teaching. And if it’s not clarified soon, it could develop into a formal schism.
 CWR: Some people are saying that the pope could separate himself from communion with the Church. Can the pope legitimately be declared in schism or heresy?
 Cardinal Burke: If a Pope would formally profess heresy he would cease, by that act, to be the Pope. It’s automatic. And so, that could happen.
 CWR: That could happen.
 Cardinal Burke: Yes.