Hi Kripa, i am not a lawyer or philosopher or something great but i am girl of your age and i can feel what you do. Giveing suggestion is easy but implimentation is toughest task. All girls have thousand of dreams when they get married, all of the sudden, if they get broken despite of giving your best, you feel shattered and mentally disturbed and you land up in such forum or counsellors to disscuss that what we think is right or wrong. i would like to suggest you that don't take any decision out of frustration, angar, reveng or something like that. Stay calm and think, what you really want? what do you expect to your life? and who are you? and then decide.
if you are ready to spend mony on him and also feeling bad to abandon him in such a situation, and also not planning for second marrige.. then you should talk to your in-laws that you are gona earn money, make your carrier side by, if you are from well to do families you can hire sisters from hospitals to do so for you , they charge 5 to 10K, otherwise during the day time your in-laws should take care of him and morning evening you will help. it needs joint efforts, one person can not handle the whole situation.
i understand that to see your husband in such a situation.... it gives depression but this is the truth and you have to accept it. try to relax yourself on this point that it can happen to anybody. if your inlaws giving you mental torture on this tell them strictly that you got enough to tolerate and you wont tolerate it anymore from there side. and also tell them that if someday you will move out, its because of lack of support and the torture given by his family not because your husband is in such a situation. here lawyers can suggest that how law can help you in this situation.
on humanity ground just be fair, take a decision and dont regrate over it. you are just 26, you got enough time to get satteled.
but practiclly dont spoil your carrer in any case, its highly required to survive in this crual world. if you are right god will help you, believe me.