fathom - 2:24 am on Mar 29, 2012 (gmt 0)
DCMA isn't about protecting your rights it is about protection Pinterest (in this case) from you; from becoming a co-defendant with deep pockets in a legal claim. The takedown order is a safe harbor provision for them... unlike popular belief DMCA does nothing for you but cause you "more work".
As you pointed out more work costs you time, and time is money, and that is a good reason to initiate legal action.
Contact an IP attorney for a free consultation and if you have/get an issuance number for copyright the firm can start charging a fee payable by defendants for unauthorize used. If they refuse to pay (thus claiming they are the rightful copyright holder) the law firm can then sue and get even more in damages.
Then the burden is no longer unfair.