Tomatoes, Friends, Help

First of all I send my heart out to Missy Piggy who lost her tomatoes to attack by caterpillars blossom end rot. Time for a caterpillar armageddon methinks, as well as some crushed eggshells in the dirt to help the blossom end rot. Finger crossed you get more (or at the plants gone??? there's still time to replant.)

Another friend has been growing Siberian tomatoes here in Melbourne. Now, I know a fair bit about tomatoes, how to grow them, how to eat them, and how to fix a few problems. But I was perplexed by my friend's tomato problem and thought you could help. What's up with this one?:

It has been growing well so far in a raised bed, but n ow has these crinkly bits. Usually rolled up leaves happen at certain times of the day, and it is simply a moisture loss thing, but I've never seen this before. is it even a problem and if so what is it? Tomato-knowitalls to the rescue!