Members are always free to attend church services in any ward they desire, and if that's the only choice a member feels works with their situation (besides just never going to church), that's a personal decision. However, your membership records will always remain in your geographic ward unless an exception is made, and that "home ward" would likely continue to try and reach out to you in love and fellowship. And since Church is more than just showing up for sacrament meeting, it will always be difficult to integrate into a ward where you cannot hold a calling or otherwise fully participate.
That said, I completely agree with @jdlessley, and encourage openly talking with your Bishop. Also, if you know of the other ward you are considering attending, I would also talk with that Bishop, and make sure he is aware of your situation, and perhaps he would also want to talk with the Bishop of your home ward. I've often found that Bishops are inspired to work with members in challenging circumstances, and can find ways the Lord has prepared for them to continue participating, that are uplifting and edifying.