Sounds about normal to me. What is your ambient temperature? And what is the soil temp at 4 inches deep?
IMO what is unusual is the 110 @ 10 inches which seems a little high when at 6" it is 100. In the summer my surface soil temps often reach 130-140 unmulched. I have never measured it at 10 inches. Different soils will have different temps.
Yes, it will kill the worms but if a worm gets too warm he will just go deeper. As far as seed germination goes different seeds have different optimum temperatures. The seed may germinate at high temps but the seedling won't survive. Prolonged temps of 120+ will kill most vegetable seeds.
I am not sure how your meter works as to whether it start showing alkalinity at +1 and acidity at -1 and neutral at 0. Get a bottle of distilled water and check it. Distilled water is neutral or a 7 on the Ph scale. In any case it is just about impossible to change a soils Ph for an extended period. Soil Ph matters when it is really high or really low and I can guarantee you that your native soil or the bagged soil or compost is neither. Bagged soil is formulated to be very close to neutral Ph. and compost is slightly acidic. Pine is slightly acidic but not enough to change soil hardly any at all. Ph is the least of your worries.