rear ABS sensors removal help

[Hellz]

been having ABS/TC lights on, on my dash for some time, and today i decided to do somethign about it. this all started right when i regeared from 4.10 to 4.88

anyways, i doubt it is my front sensors, but i have spares to do those anytime (37 inch tires loves hubs)

rear sensors
i see 1 screw to hold it on, but having a bitch of a time pulling it out.
driver side one seemed fine, but didnt remove
pass side bolt was missing, but same as driver.

is there a trick to removing these sensors?
rear shocks removed would help, but 30 degrees outside, not that much motivation.

but would appreciate help on removal

[HUMTECH]

They just slide right out. Well maybe if its new. Try spraying them with penetrating fluid a couple times a day for at least 2 days. Then you just have to twist and pull until they come free. Also can use a small flat blade behind mount bracket and lightly pry while twisting. They are a real bitch sometimes but with patience you will get them out.