In your case I would do a long shaped "U" profile that wraps the pins from both sides and once heated up, it should drop out on its own. Just elevate the board and gravity should do the rest.
The best thing to do is to use side cutters and individualise each pin by cutting in between them. Then desolder one at a time.
Then purchase a new header.
Best of luck. Sorry it had to be the hardest to remove part!
If you buy replacements: (I've done a bit of work on the headers lately)
The round pin male header, whilst THE perfect fit for 10mm IPS standoffs (male ~3mm shroud, females ~7mm shroud) is a little pricey. There are loads of gold coated square pin alternatives that are compatible with the BOM female* - I just tested this one; 855-M20-9991445. The difference is the male shroud is 2.5mm, not 3mm, so you have to ensure a ~0.5mm air gap between the shrouds. For installation ensure only short pins go through the PCB and don't fully compress the male and female headers, then connect IPS to OPS with 10mm standoffs and ensure the 0.5mm gap is visible, before finally soldering.
If all of that is too much to get your head around, stick with the BOM male round pin. The BOM female is still the best part available for 10mm standoffs IMO.
* The BOM female 7mm shrouded receptacle can accept both round and square pins
If you buy replacements: (I've done a bit of work on the headers lately)
The round pin male header, whilst THE perfect fit for 10mm IPS standoffs (male ~3mm shroud, females ~7mm shroud) is a little pricey. There are loads of gold coated square pin alternatives that are compatible with the BOM female* - I just tested this one; 855-M20-9991445. The difference is the male shroud is 2.5mm, not 3mm, so you have to ensure a ~0.5mm air gap between the shrouds. For installation ensure only short pins go through the PCB and don't fully compress the male and female headers, then connect IPS to OPS with 10mm standoffs and ensure the 0.5mm gap is visible, before finally soldering.
If all of that is too much to get your head around, stick with the BOM male round pin. The BOM female is still the best part available for 10mm standoffs IMO.
* The BOM female 7mm shrouded receptacle can accept both round and square pins
Attachments
Yea, I appreciate it but I have enough challenges (as you've just witnessed) installing the optimal part. The replacements are US $7.44 each on Mouser. I need to order my snubbers for the transformers (I built the Quasimodo Bell Ringer) so now I've got some more parts to add to the order.
Thanks for catching my mistake. I do appreciate it. I'm still learning the hard way.....
John