Sachin Pilot and other Congress rebels on Thursday challenged in the Rajasthan High Court a move to disqualify them as MLAs, in a dramatic escalation of the party's crisis in Rajasthan. Mukul Rohatgi and Harish Salve, both top government lawyers in BJP regimes, are representing them in court. Sachin Pilot - now Petitioner No. 7 against the Congress - has reached a point of no return, said party sources, by going to court just a day after Priyanka Gandhi Vadra spoke to him on the phone. The Congress has fielded one of its sharpest legal experts, Abhishek Manu Singhvi.