The problem isn't with being disconnected, but rather the data tones at the end of the EDACS transmissions make it so that the channel is still tuned until the data tones are through. The problem is by the time that the data tones are over someone has already started responding on a different channel. This response doesn't get tuned. Hope that helps with the description.
The link in my original post describes the problem and some possible solutions, but there hasn't been any mention of the progress on these lately.