This is evidenced in history during the Olympics, where East Germany ran a state-sponsored program known as State Plan Research Theme , which as a program designed to circumvent the IOC testing procedures and have all of their Olympic athletes (both knowingly and unknowingly) utilizing anabolic steroids in an effort to undetectably gain an advantage over other competitors  . The East German government implemented this program and ran it for over 20 years, and involved the use of undetectable (at the time) anabolic steroids, due to their relatively new development and unknown status.
You did make 1 point regarding said ethics, and I'll address that. You indicated that many lifters who use drugs compete in tested events and get away with it. This is absolutely true, but that doesn't legitimize the practice. In a sport where it's so easy to find untested competitions, it makes little sense to break such a rule. It sounds to me like the OP wants to compete in a tested comp because she doesn't feel like she got enough out of the steroids she took to be competitive in untested comps. This, in my opinion, is what makes her a complete asshole. She made a decision that she now regrets, and is trying to avoid the natural consequences of that decision by lying and cheating.
Equipoise has one of the longest detection times of any anabolic steroid; if you are a tested athlete you are urged to forgo its use. Equipoise can be detected in the urine for months even after use has been discontinued; some studies have claimed they can trace the drug back to as far as one year from the end of use. In most countries Equipoise is not legally obtainable; in most cases only through purchase from an underground lab can this drug be obtained. For that reason it is very important you understand the laws in the country you live.