This actually makes quite a lot of sense - the EU, at this stage, must be very worried about the possible impact of the UK revoking Article 50 altogether would be... the UK would not only be in the forthcoming EU elections, but would also be thrown into an unprecedented General Election at a time when around half of all voters would have a very serious grievance against the parties they voted for in the last election - UKIP or a hardline, pro-Brexit party would clean up in the European elections, and could even win a UK General Election.... the consequences for the UK would be dire, but the consequences for the EU with an openly hostile, anti-European leader could be disastrous.