CFO resigns for no apparent reason and obviously not planned as they have only put in an interim CFO in there. Or is it? Plans in place for a sale maybe? CFOs are generally the first positions replaced in an acquisition. Along with the other key resignations in July there does appear to be some significant shifting.
With a market cap drop from $440m down to $150m and a low EPS then CGH might be ripe for a takeover.
just a guess ..