Tax Scare for Entertainers

After the article in The Stage Newspaper on 19th May 2011, should our clients now close down their PSC's and opperate as a self employed individual or should our clients take a stand on this and say that IR35 does not apply to actors etc?

The situation is in HMRC's favour presently after the win over ITV, but does this mean that our clients should be taking action now rather than waiting for the assessments for NIC to arrive on their doorsteps?

Of course the legislation at point is the Social Security (Categorisation of Earners) Regulations 1978 - 'The Entertainers Regulations' as amended in 2003.

Any comments on this point would be gratefully received.