This was honestly what you had to deal with this weekend to get around the city.
The MTA basically decided to turn the subway into a giant NASCAR track. So you had to just get on and cross your fingers that you boarded the correct train in the loop.
The 2 train went down the west side as normal, but then returned back up the east side. The 5 train went down the east side, but then came up the west side.
Hopefully you didn’t have your iPod turned up so loud you couldn’t hear the announcements. Odds of noticing the posters were low. Even if you did, you probably wouldn’t be able to read them without the special decoder ring.