Slade was furious after the defeat and slammed the second string for not taking their chance to make a first team claim.
In what many will regard a comment aimed at Graham Hockless' fans, Slade told Mariners Net: "I'm very disappointed with the performance tonight. One or two of them have knocked on my door and wondered why they've not been in the first team - well they've answered their own questions tonight."
Slade went onto praise Terrell Forbes and admit that Terry Fleming may struggle with injury after he was the victim of a stamping which resulted in Will McDonagh's red card.