GDC09: An Irrational name change?

It appears that 2K Boston may be going back to its original name, Irrational Games, soonish. This evening, at a social event held by the developer's PR company, several 2K Boston employees were wearing the above shirts, promoting that jobs are currently available at the developer. When we confronted several 2K Boston folks about why the two URLs were on the shirt, they were ... well, let's just say they were a little cagey. If it happens, it means Irrational switched its name and back again in under two years.