Everton goalkeeper has denied talknof unrest in the dressing room that led to the sacking of Martinez.
Roberto Martinez was relieved of his duties, following Everton’s 3-0 loss against Sunderland.
But Howard described rumours that the Everton squad played a role in Martinez’s axing as baseless speculation.
“That is a grenade that people throw and they duck and watch to see what happens. It’s a load of rubbish,” said the 37-year-old, who will depart for Colorado Rapids at season’s end.
“There is so much in the head of a footballer. You pull that shirt on, you run out on the pitch and the last thing that crosses your mind is: ‘Hey, I’ve got an idea, I’m just going to strut around here because I am going to get the manager sacked. Let’s do that.’
“I don’t know how that works. I don’t think anyone thinks like that individually.
“We don’t sit around in the dressing room and have a pow-wow that we are all going to down tools. I don’t really know where that comes from.”