Well... it feels like a fairly major decision has been left up to me, which is also why I delayed so long before replying, but it occurs to me that it's obviously more important to comment on the personal things brought up here than figuring out what to do with Claw. So I will thank you for being honest and for informing us of your situation; it is obviously regrettable that you aren't able to participate in the RP right now, but I respect the fact that you decided to be realistic about it and make an effort not to slow the RP down any further. Take the time you need, however long that may be, and the RP will (hopefully) still be here by the time you feel confident enough that you are ready to return.
As for Claw, I've been pondering over his fate pretty much ever since I read your post, trying to decide what to do with him... though honestly I probably knew from the very start. Attaching him to the companions as a NPC, while it would probably be a more worthy use of the effort you put into making him, is regrettably something I have to decline. I simply do not feel confident that I understand Claw well enough in regards to personality, abilities and limitations to do him justice. Who he is as a person [I]is[/I] important for me to understand what Claw would do, and - shaky meta-decisions for the other characters to counter-intuitively and unnaturally ignore him notwithstanding - what he would say, think and feel. Even if a meta was established to render him about as much of the background as (most of) the horses are right now, my lack of intuitive understanding of his limits would inevitably become an issue once fighting (real fighting) starts happening again... and of course he would suffer the fate of background characters and either turn out so capable that he will personally be able to protect himself from pretty much anything, or (more likely) he would be liable to get killed. Once the process of how a result was achieved is pushed into the background and only the results matter, those results tend to get pretty unreliable.
So after some consideration, out of the options you've presented me with, I feel that I'm simply more comfortable having him return to his homeland.

Also, [@Shienvien]? [@Legion X51]? Post? (And [@Ashgan], too, for that matter... it's been a while once again.)