What they do "again" is pull some nice engineering feat that's also a bit of a hack, and therefore fun to read about. I assume the author is impressed, and likens it to some of Facebook's similar bend-the-world-to-my-turd undertakings such as patching git to be able to deal with Facebook's single gigantic (!) source code repository.
Oh, I see. I assumed the 'it' in the post title referred to the 'Cheating Dalvik' that followed. Not that it referred to a more generic concept of bad-practise.