It's just that simple... in theory.
In reality, it's a *little* more involved: you have to remove the "bitch pin" on the shift rod first to remove the shift linkage, and then you have to figure out a way to keep that rubber boot out of the way while you try to get the pin back in. It's not really hard to do, but it usually takes more than 5 minutes... 
For the bitch pin, a Craftsman 1/4" roll-pin punch (it's cylindrical in cross-section and flat on the end, with no point on it to spread the roll-pin when you hit it) does the job perfectly. Some will say it's too big, and you need a 7mm or 8mm punch, but I've been using the 1/4" for years without a problem. It's good enough that I rarely refer to the roll pin as the "bitch pin" any more.
Mike
For the bitch pin, a Craftsman 1/4" roll-pin punch (it's cylindrical in cross-section and flat on the end, with no point on it to spread the roll-pin when you hit it) does the job perfectly. Some will say it's too big, and you need a 7mm or 8mm punch, but I've been using the 1/4" for years without a problem. It's good enough that I rarely refer to the roll pin as the "bitch pin" any more.
Mike