While I think there are much more important fish to fry, this has roots deeper than what's on the surface I believe, and may dig down to Werner Franke's efforts to expose doping, especially in Operation Puerto.
For those scratching their heads, Franke is the renowned German molecular biologist who has tried to get Jan to confess in the past. He said that Jan has a child-like mentality and couldn't possibly have known what he was being doped with and got help from many people that Franke wanted exposed and tried. He wants Jan to finger those who "poisoned" him, even at one point confronting Jan to his face about it and pleading with him to talk.
Franke was also given a leaked copy of the 6,000 page OP dossier, and while he admitted he wasn't fluent in Spanish and hadn't fully cracked the code, he said it's clear what it implies and he wants the dossier presented as legal evidence, and officially released. The idea to both get Jan to spill his guts, and expose more cheaters (Contador being one of them in Franke's eyes).
So, it's not like there hasn't been pressure on German authorities to go after Jan. It just sucks that Jan himself has to be the pinpoint, when even someone like Franke is going after doping on a much deeper level. Franke does have a very strong ethical streak, and knows what he's talking about, if a little bit of a mad scientist. He helped expose the DDR's doping machine, and I think honestly isn't after Jan, but the establishment of doping.
Let's hope this is what that's all about, and not just one cyclist, who's already been shamed and punished.