Pretty impressive, isn't it?
You may think it's just a random coincidence, of course. Few Czech people even heard about Lehman Brothers a couple of days before its collapse. Why should Czech bankers have known something that the best informed brains in the world's foremost financial centres had no idea about?
But wait—the subprime crisis was a well known factor at that time, even in Czechia. As Czech banks are almost completely owned by foreign financial groups, the country's finance is highly open and international. Apparently, the Czech bankers had a correct idea that something bad was brewing, even though they didn't know specifically about Lehman Brothers. Probably they attempted to lure more deposits to face the possibility of a liquidity crisis, which was precisely what happened. Thus, the Czech deposit rate may have worked as a dial pointer of a complex measurement mechanism. That sounds quite plausible.
The Czech banking system sailed through the worst financial crisis in the postwar period unharmed. No bailouts were necessary, not even emergency loans by the country's central bank. Pretty impressive, too, isn't it?