[SpiderPork]

As I said, use a timer:

pawn Code:

// Under your DM command
TogglePlayerControllable(playerid, 0);
SetTimerEx("Unfreeze", 3000, 0, "i", playerid);

// Somewhere, outside of other functions.
forward Unfreeze(playerid);
public Unfreeze(playerid)
{
   TogglePlayerControllable(playerid, 1);
}