DH here with an update. Sorry to keep everyone waiting, but we've had our hands full on this one.
We took Seamus in to see the doctor and he was concerned enough to decide to have us admitted to the hospital. He said that all of his vitals were fine, and his appearance was okay, but as Justine relayed the events that had occured, he decided to have him checked out. While I headed back to work to find someone to cover my shift, Justine and the munchkin played the waiting game in the ER (Isn't paperwork great?

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They admitted him to pediatrics and he got setup in a room just about the same time as I showed back up. The nurses came in and checked him out and said that they were going to need to get some blood samples and start an IV. They also wanted to run an EEG on him. If you ever want an exercise in patience, try strapping 25 electrodes to a 9-month old and keeping them on for almost 2 hours. Whew. Oddly enough, he wasn't to bad about the IV or blood being drawn.
We won't have the results back until the neurologist comes in tomorrow morning, so Justine and Seamus will be camping out at the hospital, whereas I must stay home (no extra room).
Thank you for your support, and we will keep you updated as we can.
*** UPDATE ***
Well, DW just called as I was clicking the submit button and apparently the doctor and neurologist are putting in overtime. They said there isn't anything abnormal that they can tell from the EEG regarding the supposed seizures. He (the neuro) did mention he had never seen so much brain activity in a 9-month old (I swear I'm not making that up.) Not sure if they are coming home soon or still camping out. Will update again when I can.