Shruthi Release Envelope Noise WARNING LOUD!

Hi all, ive read the forum about this but wasnt sure if it was the same thing or not, but i experience noise coming through the ENV2 release envelope after the release has finished its cycle, the noise bleeds through for short time then goes to silence, if you reduce the release time the noise reduces in duration with it, but if you put the release envelope to zero it vanishes. its driving me mad, is there a hardware hack for it ? im using the SVF board if that helps ?
i have hosted a sound file of it on sound cloud which visually shows you what is going on, please note this is pretty LOUD so watch your ears !
Also please disregard the analog mixer hiss at the end of the passages, which is obviously a different thing entirely.