This phrase comes from がばいばあちゃん p. 169, ch. 13.

The whole sentence reads: 俺が振り返ったのと、おっちゃんが箱の中の豆腐を自分の手で潰したのは、ほとんど同時だった。

The context for this sentence is the following. The protagonist, 昭広, is told
by his grandma to go buy some 崩れた豆腐, which is sold at half the price of the
tofu in good condition. They are very poor, so this is their custom. However,
when he arrives at the shop, all of the tofu is in good condition and it
appears he cannot buy this half-price tofu.

My translation of the sentence would be:

Just as I turned it around, the shopkeeper at the same time crushed the tofu
with his own hand.

My question is about the form ~たのと. Is this construction normal. Is the
reading: When such-and-such had (just) happened. I find it unusual the ~た系 is
used followed by (explanatory?) particle の. If anyone could clear up this
grammar point, it would be much appreciated.

Edit:

How is this related to 〜たのは? How would you translate/explain this temporal
clause given this relation?

Edit 2:

The two の's are nominalisers. The と links the two time events and is not in
fact temporal と as I first assumed. That's clarified in the comments below :-)
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2017-05-17T04:11:37.493
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question
grammar translation
Clarify 俺が振り返ったのと