It might make sense to do this in other areas, since radians are often easier to work with when dealing with functions like atan2().
Gets rid of having to mod the standing to -standing + whatever you want. You can now just set the standing straight to what you want. This is needed for my proposal to change how standing is handled, but even without that, it's useful in some places (e.g. for cheating, and for missions like flf_pre02 which either immediately make you an enemy or immediately make you not an enemy). Like modPlayerRaw, this function doesn't pass through any Lua code before setting the standing; it's just a direct modification.
This didn't cause a problem, but it looked weird when you were given a dialog box at this time.