No No No he is entitled to this money off social services it is not recourse to public funds and believe me you will still need it to get some help in please do not give this up you will find yourself very stuck if you do not get this money off social services for anything even going to work or college for yourself, it is their to help you his informal carer also.
I am disabled and get this I am the USC my wife is the BC and she does most of the informal care stuff but without the extra help that Direct payments or what ever other help you partner receives you will be exhusted, Sonya ended up in hospital and that was what triggered the help we got.
Your partner is entitled to all of his benifits you just aren't and can not benifit off them, you will need to get some kind of work even part time till you can apply for your ILR, someone else had the same situation as you ie the UKC was disabled and they said that they could not use the DLA Disability living to support that person, you must not let social services try to bully you either into taking up all of the support you are giving your partner, they have to by law provide this help to him.
If you need any other info on this side of things pm me and you can talk to my wife she has alot of knowledge with this sort of thing she did it for me and she helps other people also.
Good luck with everything.
Indy