the server can be found online again. Be sure to read the instructions in the first post of this thread.
edit: and it still seems like people are not able to follow the simple instructions. If a group of people would like to "lend" the server for a private session drop me a pm. This mod may seem very buggy if you join it when there are people online who can't play properly, but once you get into it, and play with people who actually tries to play "soccer" instead of ramming you, it can be very fun. So, team up!
I'm actually surprised by how well it works, long time no see.
The game can really be quite fun, but just as normal racing requires people to make an effort, so does this thing. For example, you probably don't need to change car during the countdown since it's very likely you'll delay the spawning of the ball, wait until the ball is being fought for in a corner somewhere. Likewise you don't need to pit each time your car is slightly damaged, you will get damaged again before you know it.
Trying to hit the ball at very high speed is probably the worst available strategy, ie. driving back to your side and returning at 120 km/h. An ordered list of probable achievement follows:
1) You miss the ball and hit another player instead.
2) You miss the ball and end up in a wall.
3) You hit the ball with such force it goes out of bounds.
4) You hit the ball sending it flying thru the goal at too high speed.
..
62) You score a goal.
*Edit: short explanation of the most intrusive restrictions:
No manual pitting - pitting manually will let players leave the garage at the same time, ending up inside each others car in the mid circle, having a huge crash as soon as anyone moves.
No moving at start - if not forbidden, players will be heading for the mid circle at about a million miles per hour during the countdown, this results in everyone crashing, getting badly damaged and trying to pit, chaos.
I am not certain if I fully understand your question. We're obviously using a 3rd party application which is not public yet (but will be eventually). The ball is not a "ball" created by us, it's simply an inactive player.
But to answer your question ..
The command to (re)spawn the ball is /pitlane <playername>