CANON 7D HELP: Bent pins/Can I use a hard drive?

Hello everyone!
I have a 7D that recently got messed up: the damn pins for the memory card got bent, and bad. I was in a hurry switching the card and must have pushed it in too hard or something, but several of the pins got bent. Tried straightening them with a long tweezer but didn't work.
I will have to check and see if this is something worth fixing/expense...

So my question:

Can I use the 7D with just an external hard-drive? I also have a T5i, and am thinking I can use the T5i mainly for stills, and the 7D for video, with the hard-drive. Is this doable?

Thanks in advance,

Joe