"There was a slight miscommunication" means "Wehad actually lied"
"Lets call a meeting and discuss" means "I have no time now, will talk later"
"We can always do it" means "We actually cannot do the same on time"
"We are on the right track but there needs to be a slight extension of the deadline" means "The project is screwed up , we cannot deliver on time"
"We had slight differences of opinion" means "We had actually fought"