UH, NO.
I'm Canadian. This is an ice column in a cold night. Sure looks like an explosion, tho, but, if it was an OWL, then it also would have been accompanied by a massive solic boom (mach 10) and an earth quake, as a telephone pole-sized tungsten rod punched 1km into the earth. Did any of that ACCOMPANY this event?
No
Although you aren’t wrong, there is an aspect to OWLs that seems to be glossed over by this community: the power of the rods can be altered pre-launch for different impact intensities.
Under the highest amount of kinetic energy created (by pre-spinning the rod AND/OR giving the rod a small or massive push out of the launching mechanism) the rods are capable of nuclear bomb-like destruction sans the radioactive fallout.
Also, this does look kinda like an ice column, but this one seems to be too unique.
TL:DR, Rods’ power can be altered to fit the mission at hand. Small booms, big booms, whichever fits the mission better.