Nice, that definitely opens it up. If Phillips wants to keep coaching it'd be a welcome move. Main question would be does he convert the Rams into a 3-4 or works with what he's got?
Just to be purely speculative because I'm bored what would a 3-4 look like with our current personnel? I could see the d-line being ok. Brockers could probably be an ok tackle in a 3-4... might ask him to bulk up a little more. Donald can do anything so not worried about him making a switch to DE and Hayes/Westbrook has the frame to be a DE in a 3-4 if necessary. The linebackers would be the obvious issue. Barron would immediately have no place on the defense unless they moved him back to more of a safety again. Ogeltree would be better back at OLB. Forrest could be serviceable. In the end though we'd need at least two starting linebackers added (especially in the middle). Then there's the question of what to do with Quinn who couldn't be a DE in a 3-4. Could try and convert him to an OLB/tweener though. Snead would have to earn his paycheck in the offseason.
IMO Rams aren't a terrible fit for a 3-4 because alot of those traditional 3-4 concepts don't exist today. Edge rushers rush and you don't need two thumpers in the middle. 3-4 teams play with alot of 4-3 looks to get their best pass rushers on the field. Thats how the Broncos had Miller, Ware, Wolfe, and Jackson on the field at the same time. Look at the Cardinals Minter and Deone Buchannon almost identical in size and roles to Tree and Barron and still a top 5 defense playing in a 3-4.
Brockers is 6'5 325 He would be a great NT doesn't need to bulk up at all. Already does alot of holding up multiple blockers.
Phillips will salivate over having a JJ Watt like Talent again in Donald and Easley/Hayes could hold down the other end.
I've said it for a while Quinn needs to moved around more and playing in a 3-4 as a rush end, would let him just do that and exploit match ups. The big question would be who fills the other rush end spot.