@layman,
You reject SR. This has nothing to do with SR. If you don't believe in clocks slowing down, then leave them out of the discussion. They aren't needed here... This is simple high school Newtonian Physics.
Let's just talk Newtonian Physics.
According to you, the Earth is truly moving in some direction with some high velocity. A point in the CMB frame will be truly motionless. Let's draw a picture; E is the Earth, R is the Rocket, C is a motionless point in the CMB Frame.
1. At the beginning of the trip to become motionless, the Rocket is firmly attached to the Earth. The Earth and the Rocket are both moving away from "C".
Code:
<---- E C
<---- R
2. The rocket applies thrust to accelerate. This changes it's velocity... an in this picture we to thrust our engines away from "C". The rocket will accelerate. It's speed vis-a-vis the Earth will increase. Its true speed (measured by the CMB frame) will decrease).
Code:
<---- E C
<--R
3. After enough time, the Rocket accelerates enough to math the stationary point in the CMB frame of reference. At this point it will be "truthfully" motionless.
Code:
<---- E C
R
Do you agree with this analyisis? If not, please correct it.