Looks to me OINP messed up big time. They somehow didn't control and got far more applications than their allocated 2016 quota.
So they are just passing time till November, when new 2017 Quota will be released + IRCC will start holding 2500 ITA draws . Come November and (hopefully) Lot many OINP folks would get direct ITAs and would no longer need OINP nominations - which would certainly ease OINP pressure.
In the mean time, they are slowly doling out whatever 2016 nominations they have at snail pace, as they need to make them last till November ( or till they get new supply of 2017).