[Bacardi]

Ok, maybe FakeClientCommandEx and KickClient functions worked same time.
So I added timer, to delay FakeClientCommand.

second versio

PHP Code:

/*
Server event "switch_team", Tick 2966:
- "numPlayers" = "1"
- "numSpectators" = "0"
- "avg_rank" = "0"
- "numTSlotsFree" = "10"
- "numCTSlotsFree" = "9"
*/



int numTSlotsFree;
int numCTSlotsFree;

public void OnPluginStart()
{
    AddCommandListener(jointeam, "jointeam");
    HookEventEx("switch_team", switch_team);
}

public void OnMapStart()
{
    // While we wait "switch_team" event to update FreeSlots count, lets reset variables to avoid wierd bug.
    numTSlotsFree = 15;
    numCTSlotsFree = 15;
}

public Action jointeam(int client, const char[] command, int args)
{


    // In this code, bypass only no-team and spectator
    if(client == 0 || !IsClientInGame(client) || IsFakeClient(client) || GetClientTeam(client) > 1) return Plugin_Continue;



    char buffer[5];
    GetCmdArg(1, buffer, sizeof(buffer));
    int jointeam_value = StringToInt(buffer);

    // Random jointeam "0", no free slots and have access
    if(jointeam_value != 0 || numTSlotsFree != 0  || numCTSlotsFree != 0 || !CheckCommandAccess(client, "vip", ADMFLAG_RESERVATION)) return Plugin_Continue;


    int count;
    int[] players = new int[MaxClients+1];

    for(int i = 1; i <= MaxClients; i++)
    {
        if(client == i || !IsClientInGame(i) || IsFakeClient(i) || GetClientTeam(i) < 2 || IsClientInKickQueue(i)) continue;

        players[count] = i;
        count++;
        
    }

    // no free slots and no humans. Do nothing. No spawnpoints on map?
    if(count == 0) return Plugin_Continue;

    // get random target
    int target = players[GetRandomInt(0, count-1)];

    // Is target in admin cache
    AdminId target_adminid = GetUserAdmin(target);

    if(target_adminid != INVALID_ADMIN_ID)
    {

        AdminId client_adminid = GetUserAdmin(client);

        // You can't target this admin!
        if(!CanAdminTarget(client_adminid, target_adminid))
        {
            PrintHintText(client, "[SM] Couldn't kick %N\nPlease, try jointeam random again.", target);
            return Plugin_Continue;
        }

        // You can't target this vip!
        // Use this code if you not want vip to kick another vip

        //if(CheckCommandAccess(target, "vip", ADMFLAG_RESERVATION))
        //{
        //    PrintHintText(client, "<font color='#FF6A00'>[SM]</font> Couldn't kick %N\nPlease, try jointeam random again.", target);
        //    return Plugin_Continue;
        //}
    }


    LogAction(client, target, "Jointeam kick - Player %L kicked from server to make room for player %L", target, client);
    KickClient(target, "[SM] You have kicked from server to make room for VIP/admins. Sorry");

    CreateTimer(0.1, delay, GetClientUserId(client));

    return Plugin_Continue;
}

public Action delay(Handle timer, int userid)
{
    int client = GetClientOfUserId(userid);

    if(client != 0 && IsClientInGame(client) && GetClientTeam(client) < 2) FakeClientCommandEx(client, "jointeam 0 1");

    return Plugin_Continue;
}

// update free slots variables
public void switch_team(Event event, const char[] name, bool dontBroadcast)
{
    numTSlotsFree = event.GetInt("numTSlotsFree");
    numCTSlotsFree = event.GetInt("numCTSlotsFree");
}