The information is very sketchy and I dont think you will be able to provide complete details on this forum. So better contact a lawyer and explain to him your case.But some of the general replies are as follows:-
1. As per Indian Partnership Act,1932, majority partners cannot expel a partner unless such a provision exists in the Partnership Deed.
2. The aggrieved Partner can send a Legal Notice to the Firm /Firm's Lawyer to provide the details of the business carried out during the year. Failure to do so shall invite legal action against the firm/ Income Tax lawyer.
3, Stay Orders are passed by the Courts to grant a status-quo in the matter. That way, the Courts cannot order stoppage of the Business but the Courts can order contiuation of your father acting as a bonafide partner till the Case is disposed off.
4. As regards, Income Tax Lawyer; you have to sent him a legal notice.Most probably, he will reply that the firm has specifically instructed him not to pass this information to your father. In that case, your father has to send a legal notice to the Firm and based on the averments of the Firm, the future legal action can be decided.