....Can i use a small needle (sewing) to just pick out the little bits under the lip of the cpu?an i use a small needle (sewing) to just pick out the little bits under the lip of the cpu?
...I am tempted to take the Phenom II 545 out of my current mobo and try it but i dont have any thermal paste to use when installing the Phenom II 545 back into it when i get my new one...Unless of course i dont bother 

As RJC says, you can run IBT - just have a program that monitors the CPU temperatures (realtemp is good) running alongside. If you see the temps go too high, turn off IBT immediately.
This is probably covered in the unlocking guides, but I'll repeat - if you do unlock another core you are very likely to need to add additional core voltage to keep the CPU stable. If you are using a Phenom II X2 stock cooler, you may not be able to keep it cool enough under full load.