With regard to pinning rules - I think that they were originally written to stop pinning to the floor surface. A net would not do this by itself. Incidentally, if non-floor pinning was not OK, then Razer would have lost a number of fights as they pinned the opposition for many minutes. They certainly did with 13Black in Extreme 2 Allstars Semifinal!!
Clearly Razer pinned the opposition to thenmselves - and this was judged OK.

Another point - where is the dividing line between cluster bots and untethered projectiles?
If the clusters enter the arena as one then separate, why doesnt someone build a heavy with a big hydraulic gun which separates from a very hard, sharp edged antweight at ultra high speed? I dont know of any velocity limit for cluster separation!
Perhaps the rules should specify that clusters should enter already separated....

Richard