There is an important secret about the working world that nobody tells you in college: you can be average to below-average as an employee if you're pleasant to deal with. If you're a pain in the ass, the bar for how good you have to be at your job goes up. This is part of why Will Muschamp got a fourth year at Florida; his players loved him and, other than lose, he hadn't done anything to show his ass. It's also why Norm Chow might get another 17 years at Hawaii. (Or they figure it might be hard to hire a new head coach when the athletic department is broke.)
Tim Beckman either does not know how this works or believes he is a good enough coach that he can allegedly be a complete asshole when it comes to a player's health. Brady Hoke can tell you this is a very good way to go from "hey, our coach is kind of not good at this" to "hey, our coach is kind of not good at this and he might get someone seriously injured so we should fire him." Jim Leavitt can tell you this is the kind of thing that can sink you even if you're doing reasonably well! Mark Mangino got pushed out of Kansas two years after taking them to the damn Orange Bowl.
For now, Beckman's not saying much, and maybe this all blows over or proves to be exaggerated. If it isn't? Hope you can pull an eleven win season out of thin air, Tim. Ted Roof's got a genuine smile and a freshly printed resume waiting if you can't.