Vertigo, kendo and getting tsuki-ed

Saturday's training was the first training I've had in 7 days. I was prepared to do about 3 trainings last week, starting from Wednesday, but something really freaky happened to me 30 mins before Wed's training. I was lying down reading a Dan Brown novel, trying to kill some time when suddenly, while looking at the lights on the ceiling, things started to spin. It took at least a few seconds for my eyes to re-focus. Nausea sets in afterwards and I was feeling too woozy and freaked out to train. I took sick leave the next 2 days and went to see a doctor about this. Doctor didn't make any specific diagnosis, suggesting that perhaps it's viral. Was given prescriptions for steroids and SERC to help alleviate the symptoms. I did more research about balance disorder and came across a page which provides some insights into this topic. My symptoms are akin to Benign Paroxysmal Positional Vertigo which is described as:

"A brief, intense sensation of vertigo that occurs because of a specific positional change of the head. An individual may experience BPPV when rolling over to the left or right upon getting out of bed in the morning, or when looking up for an object on a high shelf. The cause of BPPV is not known, although it may be caused by an inner ear infection, head injury, or aging."

When I'm on my back, I'd experience vertigo when my head is tilted to the left and in that position only. I have no idea what's the cause - it appeared so suddenly. Dr Roosevelt - what do you think?

Anyway, I turned up for training on Sat, filled with steroids and SERC. The training was okay, though I felt a wee bit woozy if I spinned around alot, like after cuts. Highlight of the day: got totally owned by Australian champion Kirby Smith (tsuki-ed 4 times too!). I tried not to let that disturb me too much. ;) I was glad to be able to do kendo.

I spoke to Takashi afterwards and asked for his comments. He pointed out 3 things to me:

1. Avoid bobbing the head when coming in for the cut. I like to apply seme before executing the cut, which is good according to him. However, right before executing the cut, I have this bad habit of sinking down a little bit through the knees, thus giving my intentions away.
2. Use the wrists more to execute stronger cuts.
   
3. Avoid "playing" with the shinai to much. Like Vivian said in her post, the psychological way of breaking center is more desirable than using force. I suspect that I'm too low level to attempt that way against the seniors - not going to work I think. I'll try it anyway and see how I go.