I think that ridding yourself of a computer or phone may help in the short run, but do not deal with the fundamental issues underlying your drug use.
Changing exterior circumstances alone cannot do it. You eventually have to change yourself.
Therapy is a good start. If your therapist has diagnosed you as bi-polar you may want to discuss further treatment options. The program is a good idea, but you may want to discuss other forms of therapy and medication as well.
I know you do not like to share in groups, but you might still want to give it a try. You do not have to share your deepest pain or secrets--12-step recovery is not group therapy. Even if you decide to opt out, I think the important thing is to try things till you find what works--even if you are not comfortable. You talk about going to any lengths...
It may be hard, but it sounds like you really are looking for recovery, which is half the battle.
Better times are ahead.