Bonds can be broken abruptly, especially the light bonds of a young Kelvic. If they are abused or neglected, often the bond will dissolve and free the Kelvic from emotional attachment. Bondmates can also sever bonds. The process is a great deal like visualizing the bond as a silver cord connecting the two individuals. To severe a bond, the bondmate will reach out mentally with a dagger or some other sort of ‘made up’ weapon and visualize in his or her mind the bond being severed. Once severed, this is often devastating to the Kelvic, especially if they bonded late and deeply. More often than not they will survive, but the emotional scars from having a bond severed will run deep.
I'm sure that a bondmate can come to their on conclusions on how to do it, either by the dissentigration when the bondmate becomes neglectful, in which case it will happen whether they do it intentionally or not. However, I'm sure if they learn, tales or gossip about it, and do it themselves.
I don't think it needs particular skill, since if a bond is not working, it will dissolve on its own.
Hehe, not sure if that was much help. :/