Rear wheel chatter/hop when backing into a corner

I'm running a Contiforce SM 150/60 and when I start to back it in the rear wheel begins to chatter, ideas, comments, or a shove in the right direction would be much appreciated.

do you feather the clutch into the corner, or do you just downshift and release the clutch? if the RPM's are high and you downshift the wheel will hop if you don't feather the clutch.

Time for a slipper clutch. . .

I feather the clutch, no matter how light I am on it it still hops to some degree....

Time to work on suspension. This is likely to happen when riding suipermoto style with soft enduro suspension settings. Try to get stronger compression and rebound damper ratio. This BTW might very well happen at front wheel as well when doing hard cornering and pushing out of the corner with acceleration. I encountered chattering at front and rear wheel when riding my EXC 200 at indoor supermoto tracks. It got better with fully closed suspension settings, but I could net prevent it totally with my enduro suspension. You may very well need to get it serviced to shift it to the range you need for your riding style. I do not know the WR250X stock suspension, but I am quite sure one might experience chattering with WR250R stock suspension at supermoto usage.

Yes, the WR-250R will do the same thing.
Myself, I just live with it. :)