Inner knee pain and yin yoga

Last night I experienced a moment of ahhhhh....remember how I have been having knee pain I suspected it was one of the poses I was doing wrong. Well I watched Bernie Clarke's video on how to do the swan pose which is also known as the pigeons pose in hatha yoga and learnt how to do a modified version of it. I learnt I should not rotate the front leg too much so I used the safest method by sitting directly on my heel. i didn't rotate my front leg at all. I also used 2 blocks on each side to place my hands on because I can't seem to balance properly without them. I sat and held the pose for 5 minutes on each side without pain. When I came out of the pose I felt a relieve feeling. Today I woke up without any pain at all. I feel a sense of freedom as I walk. It's a eureka moment for me. I finally found the source of my knee pain. I must be tight at my hips, hamstrings and maybe back. Gosh I sit in the office all day so that could be the contributing factor. I am soooo looking forward to practicing it again. Do you think I will be able to get a bit more flexible and start rotating my front leg in a few months? I know I will have to practice diligently and that will be one of my targets. Wish me luck.