Trouble removing O2 Upstream sensor Bank 1

[RingSpanner]

HI again, Following on from my previous posts on this forum, I originally had Fault Code P1111 Displayed on my code reader and the engine FAULT LIGHT was illuminated, after cancelling the fault with my code reader -on starting the engine the FAULT LIGHT came back on. This time my code reader came up with fault P1647  which is UPSTREAM O2 SENSOR BANK 1 Fault. The same code came up after several attempts to delete it via my code reader. So I conclude this to be the problem, I purchased a brand new O2 Sensor the exact one for my car,,from eBay cost £29.95 . I also purchased a 22mm sensor removal socket £ 11.70 at the same time. After removing all the bits and pieces that were in the way (2 hours work) I finally got to locate the said sensor -low down on the front right side of the engine, Not exactly easy to get at ,however with some perseverance and scraped knuckles I managed to get the extractor socket onto the sensor, a universal joint and an breaker bar was also needed for the operation,, However Try as I might the damn sensor would not budge,, talk about tight --damn ridiculous -after an hour struggling I finally gave up .and had the task of reassembling all the bits I had previously removed, I was fuming, Why the HELL does a sensor have ti be tourqued up to stupid levels especially as it has a sealing ring is beyond me, Has any one else had this problem ,and how did you deal with it? Im thinking of Booking my car into a Garage ---Probably be an arm & a leg --but no option it seems ---Any help will be appreciated -----thanks ---RingSpanner