Kind of an interesting situation - many teams I see make it a point to keep their players behind the halfcourt line.
As pointed out by our dinosaur friend
, you definately have a violation when the FTL extended is penetrated and you can have a disconcertion violation on any of these.
That said, if this seems to be an orchestrated action, this team is getting another technical foul assessed - and I'll require them to stand behind the halfcourt line.