Well Locutus made a very clear post, and it never got answered.
Going from GW grammar knowledge, where everything has to spelled out exactly *grin*
Its neither a no or yes. But id assume fighter stays, cause there was no negative answer...
But i have to say that both cases are part of the twiggling in a rules change (nerf or boost) as a rules clarification. Because both read exactly the same, as if you succeed the roll, "the stealth is reduced for the remainder of the turn."
And i wouldnt worry about Vree saucers Kremmen. Stay 24 inches away from youre intended target, and youre at 6+ stealth for most of them. And even at 5+ stealth people will normally choose a ship without stealth to receive attention.