I don't think so, it is old Keynesenian economic at work, budget surpluses soaks fiscally money from the economy, precipitating slow down in economic activity. At the time, when it was clear that budget surpluses would be around (remember Greenspan worrying about not having enough treasuries because the surplus were growing...) I suggested that the way to handle that was not by making drastic changes to the tax code, but by sending annually or semiannualy a check to all tax payer so as to bring the surplus back down to no more than .5% to 1% of GDP. (they "took" my advice, once (g).)
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