Best way to ask this question is to just give a scenario:
Lineman B55 has his helmet removed from an illegal hands to the face foul by Lineman A66. Lineman B55 then pursues ball carrier A24 without his helmet and makes the tackle.
What fouls are on this play?
Are we going to penalize B55 for Illegal Participation although his helmet was removed because of a foul? I couldn't find anything in the rulebook for address this exact scenario but according to the language of the rulebook, this would be a foul for illegal participation. Also, according to Referee Magazine this month, it would be a foul.
One more scenario:
Same as before except during Lineman B55 pursuit of ball carrier A24, he is blocked by A32.
Man, you talk about a difficult play to officiate!