Matt Finch is currently controlling OSRIC, since owing to real life I've had to take a back seat for a while, and this is for him to decide.
Personally, I always took the view that OSRIC is lawful as it stands, but I would not want any "corrected" versions of OSRIC circulating on the web, because that could place me in a difficult position. Many of the things in OSRIC are as they are, and read as they do, for legal reasons that have been rather carefully thought through.
I was always quite happy with others circulating house rule documents, supplements, etc. since those documents would not have my name on them. But I decided that to the maximum extent that I had any control over the matter, the core rules are to be circulated as is, or not at all.
In practice, of course, "the maximum extent" is not very far. You could easily extract the text and produce a .doc version, which you could alter as you wish. I can't and won't stop you, or even discourage you, but in order to protect my own position I won't help you either.
I would advise you to be very careful when amending retro-clones, particularly if you intend to circulate them. This is not a good area for making mistakes!