I don't think DLH put the battery in his back. I think Floyd realized it was a necessary transformation. You could tell it was coming because of the change in attitude leading up to the fights. Dating back to the Gatti fight, where he completely shytted on Arturo, calling him an overrated C+ club fighter feasting on bums. The demeanor in his post fight interviews changed. His fight with Oscar just put it all out there on the main stage because Oscar was a big star, so it gave Floyd a platform.
It was a necessary evil though. The truth is that most people outside of hardcore fans dont know shyt about or care about the intricacies or the actual science of boxing. That's why MMA is where it's at (no diss to MMA though, because I fukks with it too). That's why he did it, because nobody gave a shyt about Floyd when he was Pretty Boy Floyd. He had to make his persona as Money Mayweather in order to sell himself and make himself marketable.
If it wasn't for that, Floyd would be in the same boat as Andre Ward or Guillermo Rigondeaux