Sonos has explored the possibility of rereleasing its previous mobile app for Android and iOS — a clear sign of what an ordeal the company’s hurried redesign has become. The Verge can report that there have been discussions high up within Sonos about bringing back the prior version of the app, known as S2, as the company continues toiling away at improving the performance and addressing bugs with the overhauled design that rolled out in May to a flood of negative feedback. (The new Sonos…