How was the signal delayed "to" something? I don't even understand exactly what you did. Delayed in reference to what listener?
When pointing two mics at the top and bottom sides of the same drum there are more opportunities for smearing waveforms than cleaning anything up.
In that case there are actually two sound sources. The Batter head is the original source, and the resonant head a secondary source.
There may be some merit in theory to time aligning the top and bottom mic (and polarity) so they are coherent and reinforce, but you can only make it right for the lower fundamental drum resonance where both heads vibrate together, or right for the upper overtones local to the batter head, but not both, so one or the other will not sum constructively.
Perhaps some studio fun to preferentially favor one resonance series over the others, but not an accurate representation of the drum's sound IMO.