I think Martinez is tactically inept. Everton played extremely well today, and yes we were let down by Mirallas' stupidity but it was Martinez inability to recognise that an outplayed and largely spiritless West Ham side would be bouyed by that penalty miss. Had he recognised the positive effect of seeing your opponent fail to put the game to bed, he would have bolstered an increasingly tired and stretched midfield.
For all his entertaining forward play, a good manager, a good tactician recognises that one size does not fit all! They recognise that sometimes forward paly has to be sacrificed to claim the prize. Sometimes, the bus has to be parked, and Roberto seems wholly incapable to processing this. For this reason above all else he is not the man to take us forward and he should be removed as soon a possible.