ChIP chip stripping - (Aug/28/2007 )

Does anybody know if it is possible to strip Affymetrix tiling array ChIP chips? Or the Nimblegen equvalent?
Supposedly it is not supposed to be possible for the Affymetrix one, but I find that hard to believe, and I know effective stripping protocols have been published for other GeneChip systems...
Any help would be greatly appreciated!

For Nimblegen CGH arrays it is possible to strip the arrays and use them up to 4 times.
The protocol is on their website. Should also be possible to strip the ChIP slides, especially since others use the hybridized material as en enrichment step prior to high-throughput sequencing.