I don't want this to get buried in the other thread
There are two kinds of joint instability- functional and mechanical
It is possible for your joint to be stable, like they are saying, and for you to still have instability
But that isn't something you just get confidence to get over. Also, another set of eyes on the problem can't hurt, if you want to get a second opinion. I did and my surgeon, whom I adore, was not upset in the slightest.
But please don't go walkin around without a brace having it give way just because someone else said you were ready