Damndest thing happened. Aside from the morning push-ups yesterday was a recovery day. Ended up going on a walk, doing some light reverse hyper sets, stretching, and foam rolling. Slept very well and woke-up feeling great, then lay down for a few minutes right before I was due to head out for work, and when I stood-up my back seized up. It's now in some pain and I definitely won't be able to deadlift this evening or do weighted carries this evening like I had planned. 

My theory is because my hips and glutes have been so wrecked, I haven't been able to move fluidly and I've been jerking too much to get up from a prone position.

Going to pivot to a bench press workout this evening instead. I haven't flat benched in over 8 weeks, which I actually think is a record for me ever since I started lifting.