Did German President sign "Trillion Dollar EU Bailout" into law before he quit?

I have scoured the morning press reports of the shock resignation of German President Koehler, eg here, and here, but can find no mention of the signature into law of the latest euro rescue package such as that for the earlier one reported here.

If the outgoing President hesitated at signing into law such a commitment it would be much easier to understand his departure than believing the cause as the reasons now being provided. It would also indicate a much greater crisis for both Angela Merkel and the Eurozone!