No it doesn't follow, what a stupid remark. It simply means the jury didn't think it was proven beyond doubt, it does not mean that at all. Does it mean all the prosecution witnesses are guilty too? If in cases that there is evidence there was a conspiracy/fit up then yes, certainly there should be a rtrial of those who were involved.
Sorry, the prosecution tried to "fit up" an innocent person. Knox is innocent - you have to work from that position now, regardless of your attempts to use semantics in the definition of guilt to imply she may actually be guilty. They made false claims about her in a criminal case.
Anyone who made a false accusation (such as the prosecutor, who I believe stated that knox slit kerchers throat, or Knox, who I believe stated a landlord went into a house...) should do time, according to the system.