Relaxing sleep has been disabled. The point why I dont forbid such spells is the following:
If we say spells u,v, and w are allowed and x,y and z are forbidden would make the task of a referee really hard and some spells have no clear destinctable visuall effect so we would never be able to track down violators.
All contestors have to relog and aren't allowed to cast any spell until the match begins. And to exploit spells like relaxing sleep it takes a lot of time. For relaxing sleep for example you have to cast and to wait for it to wear of to get the desired stacking effect - a lot of time for the other team to kill you. I tried out those bugged spells I know to see if they are exploitable during the tournament. And all exploits take too much time imho. If the opposing team is not able to kill the exploiting team in that long time they deserve to loose the match. Summon missile/energy arrow are not bugged and mana pots are allowed - so the matches should not take that long that you can cast the relaxing sleep often enough to have a real advantage.
Anyhow, as it seems some spells got disabled this morning so relaxing sleep for example isn't that big problem.
Yes, many people exploited dweomer tranfusion/ relaxing sleep to level CW. I reported that bug months ago - there is not much more I can do.