If he could not find any suitable recipients in time, yes, he should have vaccinated his own children. Still better than throwing it away. Selling it for profit

If he could not find any suitable recipients in time, yes, he should have vaccinated his own children. Still better than throwing it away. Selling it for profit would be something totally different and should absolutely be treated as theft. But vaccinating anyone, even his own family, is better than throwing it away. Of course to prove he's not abusing his position to benefit his family, it's probably wise to document his efforts to find other suitable people. But if he can't, just use it on anyone. That's what the guideline says, after all.