I dunno... it doesn't sound to me like his tail went out, I think he'd easily realize that, I think he just hydroplaned and understeered on the corner. It can definately catch you offgard till you've had it happen once or twice.
Definately though, don't turn into a corner if you can't get to a speed where you know you'll make the corner. It'll take a while before you're familliar enough with the car to know how fast that is, so until then, I'd play it pretty safe. 240's are amazing machines, but they're not foolproof by any means.
Happy driving <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wink.gif" border="0" valign="absmiddle" alt='
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*Edit: Wow, quite a few people thinking the exact same thing, hehe