From a purist standpoint, the flySpeed tag should never be messed with
in MobArena, because simply turning off flight should be enough. It is
likely that the flySpeed tag was originally included to cull "cheaters"
who somehow managed to activate flight in the arena anyway, but this
isn't really MobArena's responsibility and can very probably be handled
by other means of cheat prevention in WorldGuard regions or the like.
By not touching the flySpeed tag, it makes it much easier for server
owners to recover from crashes where the leave steps aren't executed,
leaving players "locked in the air" when they try to fly.
Closes#509 since this "fix" was the reason that feature request was made.
Andreas Troelsen
0e037b2f72