incrediBILL - 12:22 am on Jun 23, 2012 (gmt 0)
Where's the problem?
There is no problem if there is no malicious intent which is what deceptive cloaking is all about that Pinterest is attempting to flag as a warning. The only problem is if they think you have bad intentions and block your site, which was the initial basis of this thread is that their automatic redirection detection can't tell a harmless redirect from a harmful one.
Therefore, trying to trick it could trigger an automatic ban.
Always best to communicate upfront as the OP did than try to dig out from escalating issues later IMO. I knew a webmaster that tried to get out of a similar silly penalty in Google by trying similar simple bypasses and it resulted in his entire suite of sites being dumped from the index for almost 18 months. That's the risk IMO that someone gets annoyed at attempts to bypass their safeguards and dumps you altogether.
Luckily it's been resolved.