Hellebores resent root disturbance and will severely wilt for many days, if you cut or disturb their roots. I would just remove the pot, as gently as possible, and plant them. Water in thoroughly and check after a few days to see if they need additional water. They require good drainage and don't really need a lot of moisture. The only one I have ever killed, was planted near my A/C condensate drain and it drowned.
Rb

Thanks. that's exactly what I needed to know. They will go in the ground with their roots intact!

I agree, mature hellebores dislike being moved so transplant into their new homes with as little fanfare as possible.
I had lost your email and GWweb name so was unable to get in touch. How is the Black Bamboo coming along. Email me at:
love2gardennc@yahoo.com