As far as I know, they are. One of my coworkers wants to convert from CR to CT because he's enrolled at a college that's too far away to come to Disneyland as often as a CR would have to, and I know at least two CTs. Unless of course you mean Cryptologic Technicians, which I don't think Disney really has a burning need for at this time.
They are hiring in all CR right now since they don't have enough people as-is, they can't encourage people to leave at the end of the season. But they still allow CRs to convert into CT cast members. I know we have about five CTs in Table Service in New Orleans, and we've already sent off most of them. It's sad, but man, got to love those going away parties at TGI Fridays!