It's kinda hard to tell... it's kinda like the Appalacians around here: old families that are all related somehow... and poor. I mean... is it thalidimide, thorium or thiamine deficiency? So many choices...
It looks like little tomatoes growing out of the big one. Are there a lot of them or just a few. Mutations or sports occure all the time in the palnt world. May be the high tunnel is keeping too much pollen concentrated around the plants and making them do weird things or maybe it has crossed with something else that is putting out a lot of pollen.
Tomatoes are self-fertile, so pollen levels and crossing is pretty irrelevant. It is little tomatoes growing out the bottom, seems that Siletz is prone to it, and I think it's called hyperparthnocarpy... at least that's what one site called it. Haven't gotten around to finding out why it happens. Not all of the fruit are affected, it seems to be mostly the first set.
You are correct on tomatoes being self-fertile but they can still cross with other varieties to create some weird looking stuff. Not familiar with what grows in your part of the world but that one looked like it tried to have a litter instead of just one.
On further research, the Siletz is parthenocarpic, meaning it will form fruit without pollination, useful for cool temps when the pollen might not be sufficiently mature at the first flowerings. So this is probably a function of that characteristic.
Parthenocarpic tomatoes (and other plants) produce very few seeds, so this is useful for both greenhouse growing (no pollinators needed) and folks with diverticulitis (little to no seed removal necessary).
Since Calf. has turned off the water to all of its farmers for the preservation of some kind of fish or something and stop the spread of global warming we will have to get most of our veggies from Mexico and Central America now. China just fortifies the tofu with Melamine for extra flavor.
I've got a donkey that whimpers for beer... he's just purely pathetic if you stand near him while you're drinking a cold one. Do you have any idea how long that upper lip can get? LOL I always save him the last swallow in the bottle... oh yes, he drinks out of the bottle.
Personally, I take this as proof of reincarnation... my other donks are just not that interested in beer. I think ol' Shenanigans was a lush in his last life...