As far as I can tell this is correct. I hope VT try and fix things by suggesting a Shrewsbury to London service via Birmingham instead. I do pity Shrewsbury as a town as it does deserve a through service to London, far more so than Wrexham. Hell, VT could even extend their Wrexham trains to Shrewsbury, it would be better than nothing (although not, admittedly, by much).
If NR object to any part of VT's plan, I could imagine it would be the reversing at Stafford, as this movement blocks the entire WCML in one direction. I do hope SHR gets its London service one day soon though.
Adam