Sending the wrong message?
Not commenting on the specifics of this case, but in general
If a banking executive or other money handling organization can make a problem disappear through the application of money, then isn't there going to be the temptation of taking a chance in the expectations (hope?) that the funds accumulated can be used to avoid prison if it gets found out.
Would the guarantee of a prison sentence if convicted of these sort of "white collar crimes" be more or less likely to keep people on the straight and narrow?