Elton John's ex-wife Renate Blauel has launched legal action against the “Rocketman” in London’s High Court.The German-born sound engineer filed paperwork last week to seek an injunction against the legendary British singer, according to various reports.The reasons behind the legal action remain unclear, though such cases are typically grounded in privacy matters or to prevent the publication of personal materials.Blauel’s lawyer confirmed to The Guardian that his client hoped the matter would