K.S.
He sounds just like my son did/does. My son is now 3 yrs. and his still does this sometimes (not often). There maybe an underlying cause (since you mentioned your family has had the bug going around) that maybe causing it or something like an ear infection, sore throat, growing spurt, etc. My son really did that same exact thing when he had strep throat (which was so often he had tonsils removed). Every child is different, so try to listen to the screams...does it sound like pain, anger, etc. My son also has woke from dreams that will throw him into tantrums. If that was the case I would try to soothe him and if it didn't work (which it usually didn't) I would let him scream it out until he would finally whimper "mommy" and then I would know he was ready to go back to sleep. Unless, you think he may need medical attention, I would stick to the schedule you have in place and wait it out a little longer because your schedule sounds pretty good for his age. Sometimes it takes these guys a little longer to get back into a routine after they have been ill. Goodluck and hang in there! :)