I'm curious if the issue is running the VMS02 into the R-09 without attenuation between the two. I started looking some stuff up yesterday and then got busy with work and never got around to posting.
The Schoeps caps take a very high SPL and I doubt those would be the problem. Plus, lots of folks run them for loud shows and aren't reporting problems. Perhaps it is the VMS02 that is overloading, I've never used it and couldn't find a manual online for it. I did find the specs of the VMS5u. It can take 5v on the input, which is very high, and more than enough to accept the input from the mk41 caps even at extremely high SPLs (more than the mk41s could take).
But the VMS5u puts out a maximum of +20dbu (+18dbV). If the VMS02 is similar to the VMS5u, it might be putting out too hot of a signal for the R09. IIRC, the R09 only can take a maximum of something like +18dbu (right??). Which makes me wonder if the issue is the VMS02 might be putting out too high a signal for the R09. Just a stab, something worth considering or testing.