Fuck me, I go away for a few days and I miss all the fun.
To answer your question in simple terms Peter, the Z's geometry (steep rake, weight over the front wheel and wide bars) make it very responsive so the smallest input on the bars, body position etc and will give a bigger response than most bikes. That's also what makes them so fun to ride.

The 180 rear will make it even more twitchy so I would be going back to the 190 when it's up for replacement.
That being said they do stand up if you fuck up and get on the front brake mid corner and you end up shooting off in a straight line (yes I have done it) so I would steer clear of the front brake at all costs when cornering. If I do overcook it into a corner it pulls up much better if I just throw it over and stay off the gas, than touching the front brakes. The upright riding position can also lure you into a lazy riding technique and you end up pulling on the bars for stability rather than leaning forward which also stands it up, as Wattie mentioned earlier.