The emotional body is included in our work, although sometimes people separate it from the physical body as if they are two different things. Yes, emotions get trapped in the same way a physical misalignment from a slip, fall or accident can.
To some, this is mind-blowing, while others live it as their reality first-hand. The emotion will get trapped if you are not willing to feel it or acknowledge it when it comes up on some level. This is why some people cry during or after an adjustment or feel more emotional, overall. This is a beautiful release that the body makes so that you can feel lighter.
The body is fluid in its natural state and is always ready to release what is no longer serving you.