The way to do this is to not use a config (because you can't have ADE variables in the config views), but instead simulate from the schematic. In the ADE XL test editor, use Setup->Environment (or Right Mouse->Environment over the test name) set the switch view list to something like:
spectre VAR("ex_view") cmos_sch cmos.sch schematic veriloga
Then you'll see a test variable (and a global variable) called "ex_view" appearing. You can set this to (say) "schematic" (with the quotes), or "schematic","veriloga","av_extracted" to simulate all three views. You could do the same thing in your corner definitions.
Of course, because it's done via the global view list, you have to be careful that you're not affecting the view of more cells than you want, but careful naming of the views should fix that. All that the above would be doing is moving up the priority of the view you want to simulate over the rest of the view list.
Hope that helps! (I did check that this does indeed work).