In just over six months, Grigson has turned over nearly an entire roster that went 2-14 in 2011 but also appeared in a Super Bowl in 2009.
To call Grigson aggressive would be an understatement. Drunk frat boys at ladies' night are aggressive. Grigson has been more like pissed-off wolverine.
Obviously, having the first overall pick in the draft has helped the transformation process, but Grigson hasn't been content to just draft and wait.
The Colts were too cap strapped to be players in the free-agent market, so Grigson has made liberal use of the other tool available to GMs hell bent on roster turnover.
He has made eight separate trades since March.
He acquired starting right tackle Winston Justice for a sixth-round pick in 2012.
He added backup quarterback Drew Stanton and a 2012 seventh-round pick for a 2012 sixth-round pick.
On draft day, he traded up from early fourth round to the late third round to select receiver T.Y. Hilton at the expense of a fifth-round pick in 2013. Hilton is currently in the mix for heavy playing time.
He picked up corner Cassius Vaughn for fullback Chris Gornkowski. This move hasn't paid off, as Vaughn has struggled and is currently listed as fifth or sixth on the depth chart.
He dealt defensive tackle Ollie Ogbu to get corner D.J. Johnson. Johnson is currently a backup to Jerraud Powers and might see action as the nickle.
He traded away corner Kevin Thomas who was later cut by Philly for linebackers Greg Lloyd and Moise Fokou.
He made a move to pry corner Josh Gordy away from the Rams for a late-round pick in 2014. Gordy is at the back of the depth chart.
Eight trades. Six months.
He's added a quarterback, a wideout and a tackle. He's picked up two linebackers and four different corners.
He's traded away two picks from 2013 and one from 2014. He sent three different players packing. He's moved back in the draft and moved up in the draft.
Grigson has been a shark during his early months running the Colts, never stopping, always hunting for his next meal.
While many of his moves have been low-impact deals, the trade blitz will be a permanent part of his narrative with the Colts. If the team goes on to have success, we'll point to these early moves as evidence of the go-for-it attitude that hung new banners in Lucas Oil Stadium.
If the rebuild doesn't go well, the "Desperate Corner Search of the Summer of 2012" will likely be mentioned early on in the eulogy for his tenure.
For now, Grigson doesn't have time to worry about any of that.
He's probably too busy working the phones to care.