Not as big as some others, but I guarantee you the Rams are not convinced they can rely on Robert Quinn. Last two years he has started 8 and 7 games due to injuries, and a back problem like his can be an issue at any point and even end a career. 15 games of availability over the last two seasons, not to mention not being fully healthy in some of those starts he did have.
Rams will jump all over a DE if there's big value there when they're up in round 2. I agree with 43 that it's going to be BPA. Snead has to demonstrate that he can get it done in the draft which means he's gotta stack that board well and stick to it as much as possible.
If they are hell bent on adding a wideout in round 2 they will probably move down, accrue a pick, and then take the position with hopefully more value. But I just don't see CB, DE, and S all having enough of a run on them to where any offensive position will be the best player. Very unlikely IMO.