I think, given what he did for a living, guilty or not any work he did even outside the production would likely subject him to suspicion. Right now, I'd say it's looking bad for him; but I hope--whatever the final outcome--it doesn't tar all the good work that Seasme Street and Children's Television Workshop has done over the years with the same brush.Working in that type of environment, I would find a way to donate my time that wouldn't have the potential to put me in a compromising position.
Honestly, I don't know whether or not the man is guilty (and I'm glad I don't have to make that judgement). But if he was spending time with these boys alone it will be impossible to disprove these charges.
I wonder if any of these victimes plan to go after CTW with a civil suit. They could claim, correctly or not, that the CTW protected and/or enabled the Elmo guy to victimize these young men.
I think they'd have to prove that the CTW knew what was going and somehow protected the guy or that the events took place on set/dressing room or at events sponsored by the CTW.