Look at those last winning streaks (9) of Cavaliers, they are all monster and Irving wasn't there on the floor. It's just that, there are some "missing link" that happened on the way and Cavaliers must needed to figured out what is it.
The missing link is they have to let go some of their players that has a sleeping stats for long time. Trade before the deadline.
I don't blame their playing time but it's clear that some of them are not contributing when they have time to showcase their performance on the game.
They are really affected when Irving moves out, physical and psychological. That's why you will feel that they don't have the passion anymore, no defense whatsoever, They need to overcome this barrier. James have been doing it alone. Someone really needs to step up. I think other team members, hasn't been adjusted with IT. Otherwise, they really need to trade and make some changes around.