Well, you're obviously too obtuse to understand what I am saying.
Because the action you describe concerns the operations of 49 States acting as a Union to expel the 50th State from that Union, therefore: They can do that as individual States -- by leaving the present Union and forming their own.
If they wish to do so collectively, acting as a Union, to expel a member from the existing Compact, their Compact of Union must specify that they can do that -- because the Union only has such Powers as are specifically ceded to it by the individual States. (I.E., see Amendment X).
As I have told you.
You throw a lot of 'must' and 'specifically' and yet you can't point to where the Constitution says states cannot nor point to where the word 'specifically' is in the document. So the only conclusion any rational person can come to is that states may secede unilaterally because you say that they can and that states cannot turn another state out against its will because you say that they can't. With all due respect that's nonsense.
As I have told you.
Over and over and over again. What you haven't done is provide anything to back your opinion up.