Flash or HTML5 on opera mobile 10, Sprint TP2 WM6.5

[gxnext]

So today I tried to viewing a youtube clip from a link that was tweeted to me, but instead of the youtube clip prompting the htc video player to load the video as usual it played in (my set as default) opera mobile 10 browser that I was viewing the page in. Now to get to the point, I don't know if this video was playing in flash or html5. but I'm guessing it was flash because when html5 videos play it says "html5" as its loading, but this one didn't it just did the default loading screen. anyway I'm just pretty shocked that flash is working in the browser.... because i didn't install it specifically. I'll update this with a screen capture soon.

oh, btw yes my rom is stock.

*Update*