Pins are too small, you'd bend things out of place and probably break something that way. I would go ahead and order a proper jig, they're dirt cheap and will save wear and tear in the long run. You can order the RCMLoader One, which is a payload dongle that comes with a jig, or I believe you'll be able to buy
@MatinatorX's DragonInjector soon.
In the mean time, you can use one of the many other techniques people have for getting into RCM mode. Bent paperclips and tiny screwdrivers can work, but they can also damage your pins. My favorite "Macgyver" method is to take apart a spare piece of CAT5/CAT6 network cable. Inside the cable is 8 wires, these are made of soft copper and should be less harsh on your pins, so it's good for temporary use until you get a proper jig.
Using the paper clip method every now and then is probably fine, especially if you just use it to enable AutoRCM.