Ian Allinson says the decision to let assistant manager Glen Alzapiedi leave St Albans City was based on a need to “freshen things up”.
The former Concord Rangers number two arrived at Clarence Park 18 months ago following the departure of Lee Allinson into management at Biggleswade Town.
But the end of his tenure came on Tuesday night after a lot of thought from the City boss.
Allinson said: “I took some time after Saturday’s game [a 2-1 defeat to Tonbridge Angels] and thought long and hard about what we were doing wrong.
“We have some talented players in that dressing room but we are not playing to our potential.
“The situation we are in means we need to look at all areas in which we can improve. Glen hasn’t done anything wrong but we can’t afford to keep going down the same avenues.”