Ok, pbase file limit is also 10MB but Zenfolio came through for me for next 14 days. Here is my brick in the wall. Keep in mind I was between thunderstorms so my pic lacks that nice direct sun contrast yours has that really shows off the sharpness. I also did not have things quite leveled but did not want to do anything in PP before posting. Once leveled in PP, the pin cushion correction is just like yours.
full size download here --->
http://stilltheguy.zenfolio.com/img/v1/p113864861.jpg
DA 55-300mm, f/8, 210mm. 100 feet or so to wall, 1/125 shutter, ISO 100, tripod leveled as best i could with bubble level and 90 deg to wall
Zenfolio account will be closing soon so brickwall may be gone without notice. In the future if anybody needs full-size brick wall shots to re-open this issue just pm me and I will repost pics else where.
After analyzing the wall, I had to run out and get a quick critter pic just to remind myself that for my purposes I can't see the pin cushioning or corner softness. Still don't like it though. But after this pic I feel better.