For what it is worth, I don't think anyone worth their salt, whatever their label (as if any identifying modifier is neceesary to append to Christian Catholic), would disagree that translations from the Latin into the vernacular must be authentic.
Those of us who subscribe to The Wanderer and who read WDTPRS by Fr. John Zuhlsdorf are only too aware of the problems; none of those problems, however, justify severing communion with one's Bishop or the Pope.
Don't you just LOVE Fr. Zuhlsdorf's weekly column! He has a web site set up for the express purpose of understanding and comparing the orignal Latin and English texts.
Traditionalists who maintain their allegiance to the Holy Father are an inspiration and a wonderful example of humility and grace. I think they're going to see a portion of that good fruit during the pontificate of B16.
But for the radTrads - they will answer for the souls they've led away from Rome, just as Luther answered for it. The "I know better than the Church!" attitude is a road to perdition.