well of course u won't be able to use the computer for 3 days (unless u ofcourse have integrated graphics) but other than that it's gonna be fine.
And vid cards are tough, I honestly used like about 60% of my strenght when pulling out my card, I was so sure it was gonna snap to pieces. It also bent alot, but then the super-idiotic attaching system released the card and I got it out
And yes, it was the only way since my case is really really small and lots of messy wires so I had no idea what was holding the card untill I got it out.
So once again brutal force prevailed.
So yeah, nothing bad is gonna happen.