[Dragony92]

You didn't define color Grey, spectatorid, specid....than string in command spec and you didn't comment two lines...
I think that's all I didn't test it...

Edit: And also Float:
new Float:SpecX[MAX_PLAYERS], Float:SpecY[MAX_PLAYERS], Float:SpecZ[MAX_PLAYERS], vWorld[MAX_PLAYERS], Inter[MAX_PLAYERS];

and argument 2

Code:

public OnPlayerDisconnect(playerid, reason)
{
    if(IsBeingSpeced[playerid] == 1)//If the player being spectated, disconnects, then turn off the spec mode for the spectator.
    {
        TogglePlayerSpectating(spectatorid,0);// This justifies what's above, if it's not off then you'll be either spectating your connect screen, or somewhere in blueberry (I don't know why)
    }
    return 1;
}

Edit: I have test it, it works but dont want to re-spec user on player exit or enter vehicle....