So they don't deport you immediately if I understand you clearly.
But if they called you to judge maybe it would be better to abandon GC yourself, right?
You've been asking the same question in several threads now. You got really lucky and won a green card through the Diversity Visa Lottery. All you have to do is show up at the embassy and hop on a plane.
Why isn't that enough? Why are you looking to bend the rules, and risk loosing your right to live in the US?
Do you really want to know if you can be deported immediately or only after a period of time. Do you really want to know if it's better to abandon your GC if you have to appear before a judge? Why does this matter to you?
The best option is to be honest and follow the rules. Then you'll have no immigration worries, and can go on and live your life.