Removal of director of an private limited company

Hi everyone

I am a director of a private limited company, in the company there are 3 directors and shareholders. One of the directors has misused the powers and shared the confidential files for his personal profit outside the company to the third party. The confidential files was given to our company by a USA based company under non-disclosure agreement to execute the project. The director has agreed the mistake done by him. The other two director want the guilty to be removed from the company but the guilty director is not ready to give the resignation. I want to know how to remove the guilty director without his wish, the guilty director has 20% of shares of the company which he is ready to sell to another person and remaining 80% shares are there with other directors. After the removal of the guilty director from the company, in future the guilty director should be responsible to any problem and losses arises due to leakage of confidential file even if he is not the part of the company.

Thanks in advance