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What you are seeing is normal. The expected height for Sweet100's is 8-12 feet tall. In previous years you may have grown a different variety that did not have that height potential.
Source: http://bonnieplants.com/product/super-sweet-100-tomato/

As long as you are not overzealous removing leaves I don't foresee it being a problem particularly if it did not impact your tomato yield/harvest.

Make sure that you are cleaning away (and destroying) any old and dead leaves around your tomato plants. Avoid letting water stay on the leaves when you water your plants. Make sure that there is adequate air circulation between your plants to avoid mildew. You may want to make sure you are using a fertilizer that has the right amount of calcium for your tomato plants and that you're applying it correctly. Have a look at this tomato plant ailment key on this site to see which type of spot your tomato plant's leaves might have: http://vegetablemdonline.ppath.cornell.edu/DiagnosticKeys/TomLeaf/TomLeafKey.html. You can also look at this sight for some possible treatments: http://garden.org/foodguide/browse/veggie/tomatoes_care/371.

Given that your tomatoes have no leaves I would recommend that you feed them them with a fertilizer high in nitrogen to promote leafy growth as well as continue to keep them watered.

You can definitely try to splice it back together if the variety you have is more of a vine than a bush, but it won't re-root. There's no guarantee that splicing or splinting it will work, either, but it's worth trying. The tomatoes should still ripen even if the two pieces of the stem don't ever grow back together.

This article walks you through reattaching broken stems: https://www.gardeningknowhow.com/garden-how-to/info/reattaching-broken-stems.htm

And this article describes how to identify whether your tomato plant is one of the types where splinting, splicing and grafting are actually generally successful:

https://www.gardeningknowhow.com/edible/vegetables/tomato/determinate-vs-indeterminate.htm

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Neem Oil is good treatment for most pests.

Here is a link with more information.
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm

Trim away any dead or damaged plant material.
Give the plant a fertilizer application to help encourage new leafing.
Wait and see!