Could an excessive hip slide be my problem?

So, could this be caused by too much hip slide? I tend to feel like it is, more so when hitting the short irons as I can tell that my weight is shifting forwards, whereas with the driver it's a tad harder to tell as I'm swinging faster.

Hip slide, excessive lateral movement, these things can and do cause massive inconsistency i.m.o.
Now, I can't talk because I move too much laterally, but *if* I take out most of the lateral movement, my irons get crisper, but my woods get shorter.
I played with a chap the other day who moves way back and then way through to the finish and not only does he crunch the ball a mile, but the "low" part of his swing (where he catches the ball with an iron) is much longer than mine. His strike with an iron is just beautiful, and I told him as much.

If you feel you are simply sliding to the right why not do lots of "feet together" drills where you just turn your shoulders (and your backside accordingly!), maybe even as I do with a straw sticking out of your mouth as well, aiming the straw at the ball and resolutely refusing to do anything other than turn.

Works for me, but eventually I have to stop it as I don't want to compromise my usually quality hitting with woods.

Other than that...