PIGS and the Eurobond

The latest idea for dealing with the fiscal problems of the economies known as PIGS (Portugal, Italy, Greece, and Spain) is that bonds, backed by the entire Eurozone, be issued to finance government spending in the economies that are struggling to reduce their government deficits. One would think that the Germans would be opposed to this idea since the issuance of Eurobonds may result in the Germans paying for at least some of the spending by the PIGS.  However there seems to be some weakening in the German position as described in this article.