BUZZ-Whitbread: CEO exit knocks shares off record
** Whitbread (LSE: WTB.L - news) falls back from all-time high hit Monday in heavy volume
** Says boss to leave by Feb next yr, as co posts another surge in profits & steps up expansion targets
** Co's stock market value has grown from 2.5 bln pounds to almost 10 bln pounds since Andy Harrison joined from easyJet as CEO in Sept 2010
** Stock, down 1.7 pct, 5th top faller on FTSE 100 & easily the most actively traded on index, with half of its 90-day daily avg having gone through in