[Bowden Tube Not Comming Out of Extruder Head]

The material is out. I'm trying to detach the tube at the extruder. I'll have to try that. I have been able to get it out once before (through a lot of effort) but it appears like it's stuck in there, although I don't know how it could be stuck

[Bowden Tube Not Comming Out of Extruder Head]

I'm trying to remove the bowden tube from the extruder head in order to fix a clogged nozzle but the tube won't come out. I've pulled off the small horshoe shaped piece and im pushing down the piece it was attached to but it won't pull out. I'm applying quite a bit of force that im becoming concerned. Is there any thing im missing or some tip to getting it out?