Shiv Sena MP Arvind Sawant, still firmly in a stunted Team Thackeray, today said the MPs who switch to the rival faction led by Maharashtra Chief Minister Eknath Shinde will be "violating the Constitution". Of the 19 Lok Sabha members elected on Shiv Sena's bow-and-arrow symbol, 12 may soon form a separate group -- a situation not very different from that in the state assembly, where Uddhav Thackeray's government was dislodged by a mutiny within the Sena last month.