I don't know if this is intentional behavior from the boss or not, but he emerged under the seismic probe and then it just stayed glued to him the entire fight. Freedom was denied this day as our glorious solo helldiver could not ride the hive lord for the required time to input and sample the (fleshy?) geologic terrain it was covering.

If it was a bug in the coding, it was cool, if it was intended, also cool.