Don:
Here are some pics of West Bend; Mike may be able to fill in details of what exactly was done.
This is the approach to the 2nd green; I'm presuming the bunker left was filled in with sand (by the way, the drop-off on the backside of this green has to be seen to be believed -- one false move backwards, and you feel like falling off a house):
Here's the par 3 8th green at WBend (both photos courtesy of RJ Daley during the '07 (?) Langford/Moreau Cheesehead Tour):
Don, for comparison, here's a look at some bunkers from Lawsonia, probably the most faithfully maintained and restored Langford course around, in part due to Ron Forse's thoughtful work there:
Here's a look at a fairway bunker complex on the 6th hole, with the bunkering of the 6th green in the distance:
Here are the famous "en echelon" bunkers on the par 5 13th hole:
Note how on both holes at Lawsonia the sand in the bunkers lays flat, with the grassy face of the fronting mound coming all the way down to ground level. Compare that to the 8th at West Bend, where the bunkers have a somewhat "flashed up" look. I'm guessing the WBend bunker work eliminated the flashed-up look, and kept the sand level with the ground, with the bunker face extending all the way to the ground level. A faithful restoration of the WBend bunkers would make them more like those at Lawsonia.