Depends on the size of your bin. If it's big enough you could move all the "hot stuff" to one corner allowing the worms to get away if it's too hot. They should go back into it once the heating stage is done. Greens + Browns will always = at least some heat.

I have an 18 gal Tote box. I have all the food stuff to one side. I placed a frozen water bottle in bin last night before I went to bed hoping to cool things off for them. I didn't know where to put that in the bin so I dug down and placed directly in middle of bin. Bad move? Please advise.

thanks
Tammy

The cooling won't hurt the worms and it's unlikely the heat all at one end will either, at worst the worms will congregate in a comfortable area until conditions are right, lets face it in the wild they survive scorching heat and winter freezes and doesn't sound like your bin is close to either extreme.