the "Callahan disbanded the walk-on program", or the "program was in shambles", etc.
I think Nebraska fans view the program's state in 2007 as much more dire than Bo Pelini and other coaches saw it. From a pure football standpoint, we weren't winning and he lost the team. That's not something insurmountable to an even mediocre coach. In fact, him losing the team might have sped things up for Bo because he wasn't fighting for 2-3 years the "cally guys" - that wanted their old coach back. Didn't have a mass exodus of transfers.
What fans saw however was a cultural shift in the program. A political mess. From the access, to the way he conducted things - it was different. And it wasn't all good for sure. But did taking down the photos of former players really negatively impact the team Bo coached in 08' and 09'? Because "alienating former players" is always included in every argument for why the program was in shambles and why Bo had it so tough - but if we're really honest about it, taking down some photos and not inviting Peters to a practice or two had zero impact on the 08' season.
That's why I think Callahan did more damage to the fan base, than he did to the actual football program - especially in regards to wins/losses. I'd say Bo's early success proves that.