If a person was truly being guided by the Holy Spirit, there would be no doubt as to whether Moses used the name/title Ehieh or the name/title Yahweh to refer to יהוה. God makes many references to certain aspects of Himself-- the God of Wisdom, the God of Truth, the God of Righteousness-- and all of these aspects are suitable for whatever situation God is speaking about or dealing with.” I Am” would seem refer to Ehieh (the all-knowing identity of God that sets Him apart from other gods, but does not clarify exactly who He is). Ehieh seems to be saying I am God, this is what I am (not this is my name).
Yahweh, the personality of God that is wise, didn’t really become prominent until the priesthood. Moses was of the tribe of the Levites, but was not raised a Levite. Aaron was the practicing Levite, so the aspect of God that is wise (Yahweh) wouldn’t have been fitting for Moses at the time he asked God what he should be called (especially since Moses is said to have been ignorant in some fashion).Since God told Moses that "I will be what I will be," obviously He was talking about the future and, as such, could have very well been telling Moses, don't worry about my name right now, I'll tell you when it's time to be revealed(especially since the Israelites had no idea what God’s name was at that time, Aaron included).
I am (Ehieh) would, then, seem more appropriate for Moses since he was ignorant (simple minded) and did not need to know Who sent him, simply what sent him. Religious Christian make this mistake on a regular basis by saying that God is His name, when God is what He is (I am). Yahweh, the personality of God that is wise, would not be able to work very well with Moses, or any other simple minded person (I realize that Moses was said to have had a speech impediment, but his ignorance and arrogance showed itself on many occasions). Maybe Moses ignorance/state of simpleton is why once Moses joined with Aaron, he was then able to perform miracles (or actually, Aaron was the one performing the miracles, especially since Wisdom knows all things, spiritual operations included).
Any way you look at it, arrogance and self-righteousness are not attitudes that the Holy Spirit works well with (and tend to taint or pervert and lead to misinterpretation). Whenever a discussion turns into a debate, that usually means that arrogance, or some other negative personality trait, has something to prove, and the Holy Spirit cannot operate within a person who is arrogant. Contradictions occur when truth is convoluted by personal conviction.