Corporations and legal personality ( Alteration of articles)

Hello sir could u pls explain to me in a simple way this case law. I find it hard to understand. Sidebottom V Kershaw, Leese & Co Facts: The company altered its articles to empower the directors to require any member who carried on a business competing with that of the company, to sell his shares at a fair price to persons nominated by the directors. The minority against whom the new article was aimed did carry on a competing business and they challenged the validity of the alteration on the ground that if was an abuse of majority power to 'expel' a member. Held: The Court of Appeal held that the evidence showed that the claimant might cause the defendant company loss by information which he received as a member, and as the power was restricted to expulsion for competing, the alteration was for the benefit of the company as a whole and was valid.