Very cool, if true

1. One of the important things to remember is that most Russian soldiers are either conscripts or contract soldiers and this is an important consideration. [Technically the conscripts are not permitted to serve outside the country, but most were "strongly encouraged" (ie forced) to sign contracts waiving this particular point of Russian law), and so may be lumped in with the normal contract soldiers albeit at something like 10% of the pay.] I suspect that Russian law doesn't allow the US idea of a Stop Loss program absent mobilisation. With mobilisation it allows the existing soldiers to be retained at the end of their contacts (and a lot of them are up very soon), so I suspect a big push for this is not the mobilisation of civilian assets (although this is important in the long run) but rather to prevent the current Russian soldiers in the Ukraine leaving the military when their contracts expire.

That said replacements and reinforcements will probably be needed. But the more general mobilisation has it's own problems, although it currently has been shown to be very good at directly inducting the protestors into the military (and under military discipline and rules). Hopefully (at least in Putin's eyes) effectively eliminating a political problem at home.