It's what we commonly encounter, this is because of some situation that happens to be unexpected. So, changes definitely be happens at any time and we should accept that kind of stuff.
First of all, I don't think we can easily accept the change of the project because people are so sensitives about the changes. Just look at the people who always confronting the developer to answer them.
It probably depends of what kind of changes that may be. If it's for the good of the project then people could probably understand the situation and I think it's also depends on how the team would explain.