shares transferred within one year

In my society (duly registered society) flat no 301 was holded by husband and wife jointly. Husband died in 2010 so society transferred all shares to his wife in December 2011. After that wife sold flat in next month i.e. Jan 2012. Then new member applied in society for shares transfer. And society transferred share certificate in to his name in May 2012. So time between two transfers is only 5 months which is against bye-laws point no 29(2a). Now new member wanted to sell flat in this year 2016. And for loan process Proposed buyer's bank is asking for letter from society that they have transferred shares in 2012 was a mistake and we were not aware of that particular law/act. But society has rejected to issue such letter. Plz help me if i have any solution for this. Rahul Phalle.