I think is a matter of time before Bolivia breaks up or becomes another story of a failed democracy. Spanish newspaper el Mundo is telling that Mesa has abandoned the presidential palace. Lets see what happens next. At least in my native country Ecuador means a new government. The problems that Bolivia faces are not easy to resolve. Bolivia has reached a tipping point and anything can happen. Also check this link from an Op-ed of Oscar Ortiz of Compromiso Ciudadano.
Update:The President of Bolivia has returned to the palace, unfortunately El Mundo instead of adding a new link rewrites the whole story. So the previous link has the news.