Hi Sharren... I have a reason to believe that you have stated lie in this forum.
You want to get rid of your husband's father and so you are looking for a legal way to do the same.
First you stated that "As a couple we didnt had any personel Problems".
Then you stated that "as time passed he also started phisical harasment also as per his father's suggestion."
Then you also state that "I also have felt that his father dont have good character".
Is it just your feeling that your hunsband's father is bad or are you sure that he is really bad?
If it was really true, you will not state as "I feel". You will state that "he is bad".
If it was really true that your FIL is bad and your husband also supports it, you will not want to live with your husband.
But, you want to live with your husband.
How can you live with a husband who supports his bad father?
You have already done all the damage to your marriage. So, do not take any legal route to ruin it further and cause pain to everyone.
So, if what you say is true, please pursue MCD and leave your husband and his father at peace.
Or else, join your husband and live peacefully. Throw away the law and consider your FIL as Father, not as Father-in-law.
But there is a very less chance that your husband will accept you back after hearing such ugly comments from you about his father.
Your husband will have hard time to accept you irrespective of what you said about his father is true or false.
Either way you ruined your marital life with a major blow.
If you really love, trust and want to save the marriage, it may take many months and years of patience and consistent pursuance with your husband to get back his trust and love.
Finally one question. Do you think or believe that your husband also will look at other woman in your absence?