House Owner not allowing us to vacate the rented house.

Hi, I am sailaja, a working woman in Bangalore. We are staying in a rented house 1BHK from dec 5,2012 till date. The agreement is made on dec5, 2012 on my husband's name for a period of 11 months, upon which on mutual acceptance can continue staying,after that it was not renewed . And now my husband is in USA from last 10 months and may take one more year to come back to India. We are planning to vacate the house as it is not sufficient for us with two kids. But, the house owner says that my husband should come here physically at the time of vacation. And the owner has our money(55K as security deposit at the time the agreement made)with him. Also, my husband cant come back because of his contract with the company, and even we are really worried about the travel costs nearly 2- 2.5 lks. We are paying rent regularly, have payment receipts also till now. Even, my husband said that he is ready to sign in any of those docs to cancel the agreement, if I send them as soft copy. For that also, owner dint agree and literally wanted my husband to be here physically. Is it mandatory that the tenant(on whose name the agreement made) should be there at the time of vacating? Is there a way he can transfer the security deposit amount to transfer to my husband's account without his presence? or How can we vacate the house without my husband ?? Any help please ...