In my opinion softer side springs would give you less side bite through the turns because it puts less pressure on the pod. Also adding rear pod droop would transfer more weight to the front of the car off power and would make your problem worse. First thing would be to dope less of the front tire, i usually do full rears and half fronts. Dope the rears for longer than the fronts.
I have a setup for the V-Dezign ( if your friends running the cr-v) that is my go to setup for most tracks, and it works with all tires ive tried. have him try it . It should work well for him. I usually run AE black side springs unless i need a little more mid corner grip and then i go to AE greens or sometimes AE silvers.