Hare are a few candidate solutions:
The Treasury buys IDO tokens and holds them indefinitely in the Treasury with a ride or die mentality (we could tell protocol founders that we are the LONGEST TERM investor in the ecosystem!)
The Treasury buys IDO tokens and distributes them out to $mine stakers on the day that the lock-up negotiated with protocol founders expires
The Treasury buys IDO tokens, swaps them into $mine on the day that the lock-up expires (thus driving $mine price higher), and burns that $mine (making $mine permanently more scarce)
Probably there are other mechanisms that could be imagined??