From the Spirit Release Foundation:
Spirit release involves freeing earthbound spirits from their condition of attachment. This is done in a compassionate, non-confrontational way, by contacting the spirits and speaking with them. Spirit helper then move the spirit on to its rightful place in the universe. The person who has been affected by the attachment is also offered healing, counselling or other therapeutic help. The issue of psychic protection is address so that there is a safeguard from any further intrusion.
Spirit release differs from exorcism which attempts to banish the attached spirit by force. Spirit release takes a gentler approach, seeing the intruding spirit as a being in need of help and understanding.
Although spirit release as practised in the west is not part of any religious doctrine, it does invoke the help of higher spiritual beings.