My shoulder has improved, but it's not 100%. I plan to get a lacrosse ball this weekend. I'm still doing the exercises they suggested to me in PT along with my workouts, but I included military presses today. My shoulder didn't hurt.
As for DLs, it was a mixed grip. I don't understand how it happened at 245 when I regularly deadlift 275-315. I've been massaging, and stretching it. Pain has subsided a bit, but it's still lingering.
The mixed grip is the absolute worst grip you could use for the deadlift. Asymmetric loading and potential for bicep tears are very high/bad.
On a side note, I'm dumbfounded at the people that still don't realize that eventually the grip will become the weak link of the deadlift. The
only way to improve the (raw) deadlift at that point is to strengthen the grip, not skip over the weak link. If you aren't gripping onto something tightly, your nervous system will not be activated to a high degree, limiting your performance/strength. You're only as strong as your weakest link...