There is a dissociational element in vipassana, but it is that your ego does not associate pain with suffering or fine sensations with lust.
What I experienced in me and I see it in others as well, is that they deal with the real world much intensified. Of course, you distance yourself in the retreat, but this is for self improvement, as sometimes you need a time out to really look deep inside, calm your mind so it is sensitive enough.
A Vipassana meditator dissociates from their emotions while identifying with the physical sensations (whereas what is generally called as the ego/soul/self is, at core, the emotions themselves). Retreats acutely develop this process, but the effects are felt throughout one's daily life.
Your saying "the real world much intensified" is the effect of this process of identifying with the physical sensations (hence "intensified") while tacitly dissociating from the associated emotions.
While dissociation is one way to cope with emotions, it is not a reliable to way to deal with them in the real world.
Do you realize that Vipassana as practiced in the West is not so much about elimination of ego as distancing (hence dissociation) the said ego from the soul (the seat of emotions)?
As the emotions are still in place, when push comes to shove the distanced ego will rear its ugly head again and again (hence unreliable).
There is more to the human condition than the ego, and this is what Satya Narayan Goenka doesn't get. He is essentially promoting an extreme form of everyday psychological dissociation.