This is just so wrongheaded because that station was already 3/4 full, with 30+ bikes. Meanwhile, one avenue block west, the 8th Ave./52nd St station was empty (I know because I walked by it) and the CitiBike app showed the 9th Ave/54 and 9th Ave/52 stations were empty.
It's clear that the powers that be at CitiBike have targeted Broadway for rebalancing, perhaps to get tourists to pony up for the more lucrative $10 day passes, and are ignoring the members who live in Hell's Kitchen.
Here is a snapshot of the Haves (red means full) and Have Nots (blue means empty). The highlighted circle is the Broadway/51st. station.
Here is the O'Brien map.