. "upon termination by Atlas America other than for cause, including disability, or by Mr. Cohen for good reason, Mr. Cohen will receive either (a) if Mr. Cohen does not sign a release, severance benefits under Atlas America???s then current severance policy, if any, or (b) if Mr. Cohen signs a release, (i) a lump sum payment in an amount equal to three years of his average compensation (which is def" . . .