aborvitea dilema

My husband and I planted an aborvitae next to the house to protect it while it was young,12" tall, and had intentions of moving it into some landscape... well 20 years have passed and it is now 20 feet tall and right next to the house. I was working around it and thinking of "bonsai-ing" it to give some flare to the landscape that we are just now working on and then had a few concerns. 1. can this be done? Can I pull the top toward the ground and stake it and hope that it will continue to grow in this new way after 20 years of being upright? 2. The root system, how big, deep, mass are the roots on a tree this big? not only is this trunk within 2 feet of the corner of the house, it is about 20 feet from the septic tank. Is this a potenetial problem and are we better off to just cut it down at this point?