Unacceptable pull back of Erasmus grants in Spain

The Spanish government has decided to change the rules applicable to Erasmus funding for exchange students midway the academic year. It has now announced a cut in its contribution to the Erasmus fund that will leave thounsands of Spanish students currently enrolled in programmes abroad without funding that had been pre-approved (see the coverage by The Guardian).
In my view, this is a myopic measure that breaches the most basic guarantee of legal certainty and legitimate expectations. It also shows a significant disregard for one of the most popular mechanisms of development of a true European demos and one of the more palpable examples of the potential implications of the European Citizenship enshrined in Article 20 of the Treaty on the Functioning of the European Union. Deplorable!