No, he didn't.
We required two or three fresh faces, not a complete upheaval - nine new players (three of which have returned to their parent clubs), another two out of the door (soon to be three), and at least another four offered to other clubs.
And before people say how shiite our form was pre-JG, a good coach makes players better, organised, fitter, and motivated, as well as having a clear system/style of play.
Look at the jobs Adam Lakeland & Jim Bentley have done at Kings Lynn & Southport, as examples.
We lauded the players after the Chester & Farsley game, 8/11 of the players who started in both games were signed by AA.
Who have been scoring the goals/creating since JG came in? Hedley, Hatfield, Salkeld, Hazel... even Rivers last Saturday!
I agree with you that it was AAs time to leave, he looked like a beaten man from January onwards, and this no doubt contributed to an extremely poor run of form - but JG has tried to upheave the place.