While in San Diego on spring break, my friend and I went to Mexico. You can buy Soma there without a prescription. So, of course, they bought a whole bunch and brought it back to San Diego. That night, they all took about two of them. (Sidenote: I did not take any. I have a lot of drug allergies and I didn't want to risk being allergic to this. I just didn't want my friends calling my parents from San Diego, "Yes, ZTAngel is in the hospital. She took an illegal substance without realizing she was allergic to it.")
Anyways, the all experienced symptoms similar to yours (if they didn't fall asleep within ten minutes after taking it). They could hardly move their legs and their speech was slowed. So, yes, I'm sure it will make it hard to type as well.