Dear! To be exhaustive and explanatory about the maintenance question, amongst other factors, It is necessary to know here that -
1. By which mode the property has been transferred by your mother in your favour ? Was it a sale deed or through a will or a gift deed or any other mode ?
2. When did you get married ? How many kids do you have ? With whom do they live ? Whether you both stay together or separately ?
3. What are the proceedings going on in courts between you two ? Whether she has filed any case or cases against you or have you filed case or cases against her ? What are yours and your wife's sources of income and education ? etc etc..
If she is capable of maintaining herself,has no other responsibilities regarding kids, and other things, she will not get maintenance. (Depends on the facts and positions of the parties litigating).
Talking about your questions, firstly - Normally the transfer deeds already executed cannot be cancelled for such ulterior motives, specifically when the litigation is already pending in courts. If there is no litigation going on in the courts, then you are advised to dispose off your property to a third party and not to anyone in your relation.
So making your family disputes a reason for cancelling the transfer deeds will not be allowed at all by the courts.( Second question) .
Please feel free to ask further questions, if any! But also make it a point to provide complete information on the questions asked above so that your matter can be further clarified. Good Luck!