Turntable Causes Speaker Cones To Excessively Move Rapidly

Took a nap, had an idea:

re-configure your equipment rack to a double wide unit, about 48" high. that is a very nice height for a TT

move the sub far right

move the light fixture to the left end of the wider rack

that moves the left speaker further away from the TT, 

Toe the speakers in, move the listening chair to the new centerline

and make a false back, dark color, to hide all those wires

https://www.audiogon.com/systems/12369

Hey, big news flash. I thought maybe it could be the rubber mat. I tried plaing a record without the rubber mat and I did not notice any woofer movement!

It is the stock rubber mat that came with the turntable. What are ya'lls thoughts about this, please?

@dman777 did you re-adjust VTA after you removed the rubber mat? 
The only explanation for this is your VTA  was completely off with the mat and now the arm is in a more proper position. 
When you look at the arm with stylus on the record, is the arm parallel to the record? With and without the mat. 

@audphile1 no, I did not readjust the VTA... I had it at 0.5. but one thing is interesting is that on the rubber mat when I watch the platter turn, the lip does have a slight wave in it... There’s a area where it goes up about 1/8 of an inch... Like a hill. Maybe for about 2 inches in length. It’s not much but I’m wondering if this is why?