To make a choice; one must have a choice to make.
That is to say: you have alternatives.
If you have no alternatives and you are compelled to choose without reflection; you haven't made a choice; you haven't exercised your WILL.
SIN is a condition. The condition is like a congential illness. It can be like having one leg shorter than the other or being born an albino or such.
The condition isn't chosen and neither is the conseqence which follows.
The discussion of WILL or FREE will is out of the question when the occasion of "sin" arises.
How can a person be held accountable for walking with a limp or having pink eyes?
That is the flaw of God's justice in dealing with humans afflicted by the "condition" of sin from birth.
Further, no born-again Christian has ever demonstrated an ability to avoid sin. Frankly, all they can do is insist how awful sin is and warn everybody what will happen to them when they succumb.
So, for all practical, rational and logical purposes it is the height of folly to discuss sin at all in terms of human behavior vis a vis punishment or accountability.
Human nature is what it is and isn't what it isn't.
(p.s. Gumby is obsessed with my man boobs! I guess we know what HIS nature is!!)