You can pay upwards of $100-200 for someone to delid a cpu for you... or buy a $27 for a vice off Amazon and do it yourself!
I recommend grabbing dual x5675 cpus off of aliexpress and use this method to remove the heat spreader for installation in your 2009, 2010, 2011, 2012 Mac Pro 4,1 or 5,1. I think this same strategy can work with the earlier 3,1 cpus as well.
Great for an upgrade!