Mysterious Stance vs. Power Stabilization Glove

By ROTBI, in UFS Rules Q & A

Mysterious Stance - E Commit, commit 1 foundation: When you could block during the Block Step of this attack make a control check against a difficulty of X. If successful, his attack is completely blocked. X equals the speed of this attack.

Power Stabilization Glove - R Commit: Before your opponent makes a control check for an attack, that check gets -2. Only playable if you have attempted to play a card as a block this turn.

Player A plays an attack

Player B plays the enhance of Mysterious Stance...yadda yadda...control check is made, enhance is successful and attack is completely blocked.

Player A attempts to play another attack...

Can Player B Respond with Power Stabilization Glove?

No, because while you may have successefully blocked, you haven't played a card as a block.