If this case is applied and these kws/dynamic titles are important to you, you should set up a second ad group for these Kws with a normal title.
...there are 28 keyword phrases that are disapproved.
This is actually pretty unusual, zeus661. You'll almost certainly have received an email telling you why this was done.
FromRocky is right on the money as to the most common cause. If this is not the case for you, and if you didn't get an email, I'd write to adwords support from within your account and ask why the words were disapproved. Be sure to mention which campaign and Ad Group.
AWA