they probably just locked ops for 18, 20, and 22 and did the normal 1/7 highlight activity on the other day,it just happend to be ops on the 19th.
They want to give ops player who came back a chance to gear up, with is great, but by doing it this way the are scewing over the cassuals you got a 50% chance of getting your favorite discipline bonus if you are not in to ops,
a better solution would be ops highlighted all week with another discipline like
tuesday ops and fp
wednessday: ops and wz
...
or a 2 week double gc event so that everyone would have the chance to get their favorite discipline highlighted