Sorry Kangaroo there is "NOTHING" you can accidently move on the A330 flightdeck that will permit you to exceed these limits.
Read my lips "NOTHING".
Sorry: don't agree. Have you tried turning the HYD pumps off?
SQ did it over Oz quite a few years ago with what sounds like a similar result.
They were trying to balance up the fuel. That's why the HYD pump switches are now guarded (they werent then).