its classic 2nd yr syndrome ... 1st year in you have no expectations, no fear, no knowledge of what will happen and you just perform well cos of the niavety .... then as time passes the expectations, fears and knowledge increase and you are second guessing what you should and shouldn't do and it goes pear shaped
if we had a true half who could control the game and mortimer could just play ad-lib 5/8, support play and the odd dart here and there, he'd probably go ok - but unfortunately we've got nothing like that and mortimer can't handle that role .... maybe he will one day - who knows???