How about this for an alternate explanation: the varied blitz schemes we're seeing have everything to do with an improved and healthier secondary. The past 5 games (since the Massacre at St. Louis) have included:
Bucs: Their WRs are terrible. Garcia abandons the pocket too early and can't get the ball down the field. You don't have to protect the secondary as much. Also helps that this was the first game where the secondary didn't look routinely confused on the field.
Giants: Certainly the Cowboys respected the ground game and still couldn't stop it. But I'm not certain that Wade really respects the Giant's air game, and indeed the Cowboy's secondary was able to shut down the Giants through the air for the most part. Having this luxury enabled Phillips to vary his blitz schemes.
Commanders: With Newman back, the secondary got instantly better. Not having to worry about getting beat deep (indeed Campbell had to dink and dunk the whole game) enables you to abandon the zone defense and add pressure with your linebackers.
San Fran/Seattle: This is just not a fair match. Facing inferior passing games and non existant rushing, you can bring pressure from anywhere at any time.
I guess my point is this: as much we'd all like to say "oh well, looks like Wade finally figured out how to take control of this defense", it's usually much more practical stuff like matchups, injuries, and circumstance.
The Rams game remains unforgiveable. But there's been reasons beyond Wade's scheming for the defense's resurgence. (Ones that I haven't mentioned are the play of Jay Ratliff who somehow took his game to yet another level, Spencer's return, and Chris Canty looking like maybe he hasn't fallen off the face of the earth)