Not that we are aware of.however even if there was he is not able to move without help. We can put in 24 hr care
If he is mentally capable of making his own decisions and he can be cared for with carers and he is not reliant for that on any of his wife’s money, then he is free to move back into the house and to have carers. If his wife doesn’t want him there for any reason, she is at liberty to move out.
I cannot think for one moment other than her alleging him being violent (which doesn’t seem to be possible from what you have said) that she has any grounds to exclude him from the house as it is the marital home after all.
Can I clarify anything for you?