Back to BW - injury based

Well, basically, this is my weightlifting routine for the week:
Monday: chest/arms
Tuesday: triceps
Wednesday: legs
Thursday: back/arms
Friday or Saturday (based on the amount of sleep/recovery I get Thursday night): biceps

So, two days ago Wednesday they finally fixed the adductor machine that I used to regularly use before it was out of order for a little less than a month. In fact, because of that machine missing in my regiment, I would skip decline leg press and extensions every other workout and just go play basketball. I'm pretty sure that was my downfall for this injury.

My leg workout follows:
1) Obviously stretch
2) 3 - 30 rep sets of 300 lbs on a hip abductor machine
3) 3 - 30 rep sets of 300 lbs on a hip adductor machine
4) 3 - 12 rep sets of 360 lbs on a calf extension machine
5) 3 - 10 rep sets of 730 or 820 lbs on decline leg press
6) 3 - 12 rep sets of 240 lbs on a leg extension/curl machine
7) 3 - 10 rep sets of 360 lbs on a calf extension machine
8) dance around and throw combinations at a heavy bag
9) cry a little bit on the inside because of my quads meeting endless stairs

Finally, how it happened: After 4 leg workouts where I skipped 3, 5, 6, and 7 for two of the workouts to go play basketball when I finished, I felt I was up for a full workout. My ego told me about when I decline leg pressed 1180 3 times in high school, so it's all good, I can do anything. However, this time I skipped steps 8 and 9. When I finished my third set of decline leg press (730 this time), my quads were frozen. Absolutely, positively frozen. I had to lean up against the wall next to the machine and squat to stretch them out for a couple of minutes. I figured it was just because of my inactivity. However, I misinterpreted that stiffness, it was actually my adductor muscles that were frozen up. I didn't know the signs either. I began to walk funny in a stiff, retarded looking way, and believed it was because of my quads. The next day I went and did a back workout while my 2 other roommates went to play basketball. While doing rows + Show Spoiler +, my upper leg was a little bit stiff still. Thus, I went and stretched.

After hitting the heavy bag a little bit following my workout and stretching, I went and played 2 games of basketball with my roommates. We lost 13-12 and 13-11 (just another disappointing note to this injury). During the final play of the last game I played (tied 12-12), their best player was driving on me and I thought he'd go to my weak side for the layup, which he didn't. Unfortunately, I was prepared to go that way, and bent my body trying to block his shot (8 inches taller than him). My arm got caught on his collarbone/neck area and twisted my body a little bit more. I went and sat down while one of my roommates played another game. That's when my leg really, really started to feel like shit. I assumed it was soreness from the previous day's leg workout.

Long story short: I woke up the next day (today) with extreme tightness and pain in my upper left inner thigh region, with a lesser pain in my upper right thigh region. In the middle of my afternoon class I finally pinpointed what muscle it was, the adductor brevis (at that time I only knew it was the upper adductor). So, I walked from class to the bus a little bent over because it was more painful to walk straight on it. I've been doing that since.