Stubborn creaky floorboards

[rangler]

Hi all and nice forum
Posted this on another DIY forum but throught i'd post here too just in case

I have a spare room in our house which creaks like hell, i thought ok lets get the boards up and have a nosey then glue back down and use screws instead of nails.
Took me best part of 4 hours to get all the bloody nails out and 2 quite nasty cuts later theyre all out

However i cannot get the two T&G chipboards to come free, video here
Google "youtube.com/watch?v=4h3eqG3Ilzs"

Can anyone suggest anything please.? Im tempted to just rip them up and tidy the edges afterwards then replace the chip boards with compressed ones ??

Any Thoughts please.[code][/code]

[stoneyboy]

rangler,
Looks like you still have some nails in place - give the board a good heave and replace them if the break.
end