He withdrew players from a press conference this week and has told them not use social media.
"I want the players focused on their game, their training and the two matches coming up," said Mackay.
"All focus is on that and no focus is on anything else other than just living the best they can for the next seven days because there will be so many rewards for that."
The first clue came on Monday when Andrew Taylor tweeted
Last tweet from me before our play off games with west ham... We will give it our best shot and hopefully get into final!! See you all thurs
Anthony Gerrard, who always had plenty to say and attracts a lot of 'banter' signed off by saying
There's a twitter Sabbatical for a week, peace out mother f**kers, wonder wot my 1st tweet back will say??
Hopefully Anthony it'll say you are looking forward to another trip to Wembley.