The club's first home defeat in 13 months on Tuesday when Walsall triumphed 2-1 has set some alarm bells ringing.
An eight-point lead at the top at the turn of the year has turned into Leeds trailing Norwich by four points and with Colchester breathing down the necks of United in third place.
Despite that, Grayson insists his players have the character to ride out the current dip in form and get back on track.
"It is good that we have a game straightaway. After the home defeat against Carlisle last year, we went 26 home league games undefeated, which is some record," he said.
"I understood the fans' frustration after the defeat the other night but we are all in it together – fans, staff and players."
United are sweating on the fitness of Patrick Kisnorbo, who has missed the last four games.