I had a 2012 TRc that cracked around the drive-side lower pivot axle after 6 months, this was warrantied no questions asked by SA with a 2013 model, they ran out of rear triangles in the 2012 colour so I got a whole new frame, great you say, but not when you factor in the time off the bike, cost of 142x12 maxle (which I had to pay for...) and converting my rear pro 2 (~£100), not the sort of thing you expect to shell out on after buying an expensive frame in the first place.
After riding the 2013 replacement for 2 months it has started to crack again, this time around the non-drive side seatstay to rocker-link pivot. I am going to ride it until it starts to cause problems.
I asked Santa Cruz if they planned to update the TRc with the "No bonding" technology used on the Bronson, Solo and Tallboy 2 frames, they said they had no plans to do that yet. I assume that is because it may mean new molds need to be made, which is very costly, and the fact that the Solo is basically a TRc with bigger wheels (you join the dots..).
I would NOT recommend anyone buy a TRc at the moment, which is painful to say as I would rather get rid of the frame & hassle and go with something bombproof, but would not sell a TRc to someone now without making them aware of the issue. I have also learnt to not invest in technology (carbon or otherwise) that has been used by the general public for at least a year...
A guy on mtbr has had an alloy rear TR end fitted to his TRc, this sounds like a good idea, despite the colours not working at all, there is still a bonded pivot on the front triangle though which will always be a worry even with an alu rear end.
To be honest I think Santa Cruz should address this issue publicly and offer alternatives to anyone who has a frame, original owner or otherwise.