Nicki, I would repot all of them ASAP. Don't bother drilling- use them for something else. Glazed pots are not good for orchids anyway. You can repot them just be very careful with the roots- desturb them as less as possible. If you see the roots in really bad shape you may have to cut the spike, so the plant can recover (that is what I had to do, hope yours are good). Take them out of the pots and post another picture of the roots.